Okay:
1) So Husband should BUY ANOTHER shower caddy... that is to his liking and noise level. Because, shower caddies can make noise, even an adult using it things can fall out of it. ie: like me.
So INSTEAD of telling your son he can't shower in the morning... Husband should problem solve this and BUY ANOTHER shower caddy. Since the current one is so irritating to him.
2) The other complication is, that you are a blended family. So lots of room for contradictions and he said/she said type of things, and who rules the roost more sort of things too.
3) Your Husband has an "authority" hang up. And feels you undermine... him. He is probably a tad of a chauvanist. If you don't mind my saying.
Well, the reality is: you are both adults. And parents. AND, in daily life... each parent makes a call or decision on things... especially when the other Spouse/parent is NOT there. That is life. And being you are spouses... there should be trust and the feeling that each other makes the best decision, per the kids/home, if the other is not present. AND if, you need the other Spouse's opinion or FEEDBACK... then you pick up the phone and call the other one.
The point is: between spouses, there is FEEDBACK and bouncing ideas/thoughts, off of each other. NOT it being a dialogue of one is carte blanche more correct than the other, just for the sake of being the "authority" in the house and it being a pecking-order and totem-pole of who is more above, the other or not.
4) Your Husband seems to have the attitude and inane ideas, that belittles you. Because, he thinks he is the all knowing "authority" on things.
But NO... he is not. That is life. Too bad.
And, his insulting you and/or in front of the kids... undermines, YOU. And thus, HE IS UNDERMINING, you, too. Just as he accuses you of doing to, him.
5) Your Husband, is rigid and chauvanistic. Thus, he thinks he is right and you are never right. But in a relationship, it is not about who is right and who is wrong. Because, in a relationship, it ideally is a RAPPORT.... of 2 people getting feedback from each other and having a 2-way conversation about things. But for your Husband, he is a one-way street. ie: his way or the highway type attitude...and anyone who doesn't agree with him or do as he wants, is wrong.
And that is, wrong. That is childish. That is immature. And his propensity for that attitude... is what is DERAILING... things in the house. And between you. And between the children.
And probably, the kids don't like him????? Or feel he is impossible????
Your Husband is very rigid. And his attitude is NOT conducive, to anyone else. Only to him and for him. But he is continually frustrated and mad. Because, he only wants his way, and for it to happen with the snap of a finger. And he thinks his way will be the most successful. But it is not. It has already been, proven. Because, things are not happening to HIS, way. Well no wonder. He is, an unbending, rigid, alienating person who is harsh on everyone. And what is that getting him? Success? Or, people who are unhappy with him?
Because he does not have a rapport with anyone, because he only wants things, per his "authority."
And that is just so misaligned.
He does not know how, to have a relationship with anyone in the house.
He only does, what he feels are his "laws." And what is that based on? Himself.
And he is sabotaging himself.
Because, he will not, have a nice fair 2-way rapport with people in the house and with you, and he does not know what feedback is, versus inhuman "laws" which he translates into his "authority" power, for himself.
And then lords it over, all of you.
In a home with a Spouse and with kids... it cannot be a dictatorship.
And he is undermining you.
And you are his Wife. Therefore, he has to be a good Husband too. And not be so selfish by lording his "authority" over you and everyone.
A secure Man/Husband, will be more human. And understanding of life's multiple scenarios.
In my family, me and my husband at times, have different approaches to handling the kids and making decisions. But overall, he trusts my judgement. And I trust his. And we will defer to another, if/when we ourselves cannot make up our minds. But mostly, I can make decisions without my Husband's "approval" and he can too if I am not there.
And if perhaps we don't agree 100% with the other per discipline or heavy decisions with the kids, we will have a CONVERSATION about it, together, and give FEEDBACK to another. It not being... a dictatorial mandate by the other.
Do I, back my Spouse on consequences/rule changes that make no sense just to maintain peace?
No. Not always.
Why?
Because, I have an opinion and a gut feeling on things and I KNOW my kids. AND if, I do not feel my Husband's approach/attitude toward the kids are fair, I say so. Right there. In an even keeled voice. ALSO because, I WANT my kids.... to see AND learn, that marriage/spouses... DO NOT have to be, just mindless robots to each other. And in life, I want my kids to see me/my Husband, have a dialogue about things and what our thought processes are.... to then reach a conclusion/decision, about them. And especially with my son and daughter... I WANT them to see me, a Wife and Mommy... having my own ideas too, and that I can put it forth and stand up to what I feel, is not fair. And how to do it. By my example. Mind you, when I say my opinion to my Husband, is it NOT "undermining" him. It is, OFFERING another.... perspective... to the problem at hand or issue. And I say so. And I say it in a non-hazardous manner. But I say it.
I want my kids... to LEARN that. By my example.
And I tell my daughter... that one day she will be a wife. And that, she has her own thoughts. And that, if something is wrong or does not feel right... she has a right to say so. And for my son, I tell him, that just because he is a boy and one day will be a Man, it does not make his opinions more important than the girl. EACH person, has to think... and think it out... and know what is fair or not, right or wrong.
And I WILL... at any time, be an example for my kids... even if that may make my Husband mad. I do stand up for things and to him, when it is plainly, wrong. Or idiotic. Or mean. etc.
Because, in the LONG run, I want my kids to see/hear the PROCESS of HOW.... my thoughts are and what I explain and know as fair/unfair, right/wrong, and what is just plain ILLogical. And how to speak up etc. in various ways. And why.
That is important to me as a parent to teach my kids, so that my kids... can see an actual example, of rapport. Even amidst differences, in a relationship. And how I go about it. And when I am wrong, I say so. As well.
Then, there have been times when, say my daughter was wrongly scolded or punished for something by my Husband. My Husband not even knowing the full situation or what happened. AND I went WITH my daughter... to my Husband, and told her she CAN... tell Daddy. And not be afraid. AND that, Daddy will listen. Just talk in a mature manner etc. AND she did. And my Husband listened and 'heard' her. AND he would then apologize. Because he then knew, he was wrong.
You see, it is not about who has "authority" in the house or not, or if that is a man or woman. The point for me and with my kids is... being able to know how to process thoughts/issues/communicate it and speak up. And later as an adult or being someone's Girlfriend or Boyfriend... I WANT my daughter or son, to know... how to handle it. And not just because a man is the "authority" in the house.
My own late Dad, taught me that.