I think that message is part of the reason there is so much mental health problems now.
If you grow up being told you can be anything you want, but then just live a normal or unremarkable life, maybe have job and money struggles, you're gonna feel let down, a failure and depressed.
Children need to be given more real life perspective. Like you can pretend to be the other sex, but you'll probably never really be accepted by wider society. Or letting men into women's safe spaces may make you feel kind and inclusive, but in reality youre putting yourself in danger.