I understand what you're saying. There's some degree of internalized transphobia that many trans people experience, themselves. More trans people around will mean that others will interact with them more and realize that they're just normal people. Your point here that aversion to trans people is not transphobia is the same argument that homophobes have made for decades. A phobia is not just an irrational panic-inducing fear. Your point here is just pedantic and wrong.

What we don't need on Lemmy is to have posts and comments that make trans people feel like they aren't welcome or feel like they're different for just expressing themselves authentically.

Edit: Also just to be clear, I don't necessarily think you're a bad person. You seem more open to discussing these issues and basically saying "yeah trans people can do their thing over there if they want" which is better than a lot of the people who are actively trying to rid the world of trans people. I think you're kind of on the right path but I hope that in time, you realize that some of your preconceptions aren't necessarily right. For example, saying that people like to be around people who are similar to them isn't necessarily wrong but applying it to gender expression or race would be considered transphobic or racist. I'm friends with people who share hobbies or interests with me. Their physical attributes don't change that at all. Be around people for the content of their character, not for how they look.