It’s the parents, telling their children from an early age that they can be anything they want to be. Whilst the parents might only mean they can be a rock star, olympic champion, fighter pilot, astronaut or whatever, which is patently complete rubbish and just setting the kids up to experience failure and confusion, it’s not a big step to “I can be a boy” especially when she’s surrounded by all the weirdos you mention.
You don’t build resilient kids with affirmative action and false hopes. Sure, let them dream, but keep them based in realism.
