1. Well, the original question is pretty valid. Being able to say definitively or not that there are biological reasons for someone being trans is decent starting point. Of course, asking only to prove themselves right does raise a lot of red flags...
2. Oh, no. Just deflecting and refusing to answer makes you look like an idiot. So close.
3. No one is saying that just dressing up certain ways "makes" someone trans. People can wear what they want. Might be why you dislike it so much if you're up against some worse caricature.
4. That is close to what the original person asked. Have you done research, or just asking for someone else to tell you things you wouldn't accept?
5. Being trans isn't some "upgrade" to homosexuality or something. You really don't even understand the concept, do you?
6. Is that statistic true? But imagine they'd have the day because murdering people because of a trait of theirs is terrible.
7. Providing he wasn't just claiming it as suggested, being various states of non-binary is still a thing. Of course, like Buffalo Bill, he could just want to be but isn't.
8. Provided you accept transitions, men have gotten pregnant/given birth. It's all very clickbaity when you see the articles. The other thing would simply be to add a "yet" to the statement.
9. Not caring about being crude, but, yes. You can be attracted to people without talking to them. It's one reason porn is so popular.