The problem with gender reassignment is that it's targeted at this mentally unhealthy demographic (unlike say regular cosmetic surgeries). Lobotomies used to be legal because they thought it helped crazy people but now we know it's cruel and unethical to scramble your frontal lobe. Not to mention the targeting of kids, which is way worse than targeting those with mental illness.

To be clear, the conversation would be different for me if technology to alter DNA of every cell of the body existed. Right now it's about pretending people can change sexes by hacking the body and giving people experimental drugs, along with silencing people who disagree.