Yes. If you could prove transgenderism exists. See because you attach an -ism to it you are (in English) saying "the ideology of transgender individuals" which is "we exist" which is not an ideology. It is a fact. You can disagree with facts all you want but it doesn't make you smart.or intellectual.... it makes you wrong.

That would be like trying to criticize blackness without criticizing black people, it's not possible.