I didn’t care for the diaper answer. I would have prefered “like teach young men good father roles”? Nothing wrong with guys changing diapers and helping mom but focus on guy stuff.
Seeing as the average scout is between 12 and 16 before he gets his Eagle, I feel it is inappropriate to teach them anything about parenthood. It is the job of the parents when they see fit.
I think scouting has changed for the worse when it comes to the new merit badges and such. Scouting is and will always be about building self-confidence, respect for authority, citizenship, and mostly camping. That is why as a scout leader I do not push nor encourage the “new” badges and we camp at least once if not more a month.