Discuss the difference between taking a child into a men's restroom and allowing transgender individuals to use the bathroom of their gender identity, and how that difference could cause unintended consequences.
I'm not sure what your point is. That he doesn't want to subject her to seeing a male penis? If that's the point you're trying to make, him taking her into the men's room and a transgendered person using the women's restroom are two totally different scenarios. A male who identifies as female isn't going to have his penis on display in the female bathroom, because the stalls are all behind closed doors, so only a pervert who's peeking under or over stalls is going to know that the female in the next stall was actually born a male. If it's not, an unintended consequence of the ordinance would be that it would be difficult for him to take her out alone because it will prohibit her from entering the men's room because she doesn't identify as male.