J.H.
I see absolutely no issue with the kid on the motorcycle or the father taking his hand off the handle bar and helping with the backpack. What I have an issue with is the fact that the kid didn't have a helmet on. I hate seeing parents who don't put helmets on their kids.
I take my kids out on my motorcycle (and hubby takes them out on his) regularly. We always have helmets on them though. If it's cold, then they wear their leathers. (Yes, my kids each have their own motorcycle jackets, jeans, gloves and helmets.)