Are you saying that since he was 2 he has had huge temper tantrums and yells "no" ? I was having a little bit of a hard time understanding your explanation...
But, even if I am off a bit in your description, I don't see how a child that is throwing a bunch of temper tantrums is funny. It isn't something pleasant at all, and very stressful on the parent.
But ALSO, as a parent, I wouldn't be advertising on facebook about it either. I share a rare funny story here and there about my four kids. SOMETIMES it involves some sort of bad behavior... BUT, meant to be funny. I think with a setting like facebook a lot of statuses written are meant to be light. Perhaps everyone mistook the tone of the statement your husband wrote. Maybe they THOUGHT he posted it to be funny.
...or maybe people "like" it to lighten the mood, humor DOES help deal with stressful things.