This is child abuse.
I understand why people argue that aborting mentally disabled fetuses is inhumane, even though I don't agree with it, but giving a child a mental disability after he or she is born is plain child abuse.
I'm not talking about letting your daughter play video games about war, or letting your son play with dolls. I'm talking about not telling your kid what gender they are. These kids are told that they get to decide their gender when they grow up. This is actual brainwashing.
It's like telling your daughter that rape is not really that bad and society just exaggerates the suffering it causes.
Is it child abuse?