Your last point makes me think maybe you don’t have kids? Because yes of course every parents knows that they can’t control every aspect of their child’s experience. This discussion is specifically about what should and shouldn’t be in children’s libraries. I think parents should have a say in that. Kids are like sponges. If you tell them it’s totally normal to kill puppies, some not-insignificant percentage of them are gonna kill puppies.
I loved the book Middlesex, and have nothing against transgender people. My concern is that a “movement” has started around this naturally rare phenomenon and it has become increasingly trendy to cut off your penis or breasts. This is not what sane parents want for their children.