I give my boys bubble baths sometimes, and they are okay, but I am very careful about it. I use an all natural bubble bath (California Baby is one that comes to mind) with a lot of essential oils, etc. None of the regular Mr Bubbles type stuff (that always irritates them). I also watch to see if something is bugging them. If they seem to be getting irritated, I stop for a while.
I think that, as with all things, it depends on how sensitive the boy is, what you're using, how often, etc. If you do it and they seem fine, then okay. If you notice redness then it would be good to rethink it. yk?