The moment you start trying to say a trans person isn’t trans because they had a bad opinion or an opinion you disagree with I just tune your whole argument out. I don’t care if you have the good point, once you start arguing that the only ‘true’ people are the trans people you agree with and everyone who you disagree with is a faker you are just an asshole.
Sometimes trans people will disagree with you. Sometimes trans people will have bad opinions. They are still trans.