Sweeney did nothing wrong.
Part of the problem is that it's harder to gender-bend a girl at this point, like @UnsufficentBoobage said with sports and everything else. It's all accessible to girls. A boy in a dress and tiara, holding a barbie = trans-girl. A girl in a batman mask holding a lightsaber toy next to dad grilling meat at a bbq = that's just a girl.mothers wanting a girl instead of a boy arent that uncommon, same for mothers wanting a 'special' child they can parade around on the internet for attention. add to that the fact that these women have a deep hatred for cis white men and the result is a bunch of mothers trooning out their sons for their own gratification and woke cred.
no such dynamic really exists in fathers / daughters though. maybe because men are overall less likely to drink the tranny kool-aid or succumb to woke ideology in general, maybe because they're less likely to be social media attention seekers. at "worst" you occasionally see fathers trying to drag their daughters into male hobbies and activities in order to spend time and bond with them.
The difference to nutty parents, in my opinion, is that one scenario is secretly seen as emasculating while the other is seen as empowering or free-spirited. It's hard to capitalize on your daughter growing up and liking superhero movies, Star Wars, vidya, go-carts, sports, carpentry, kickboxing, fishing and so on.