Being an autistic adult is scary. I've long since stopped trusting my ability to infer what other people are thinking or feeling about me. Best I can do is educated guesses.
This person has generally been friendly towards me, but is that because they like me or because they're hiding their burning hatred beneath a veneer of politeness? There is literally no way to know. The worst part is that you can ask but there's still no way to know if they'll tell you their honest feelings or not.
The only assumption I can make is that if someone repeatedly makes the unprompted effort to approach me, that person probably likes me reasonably well. So the logical course of action is clearly to never approach anyone first and only speak when spoken to. This is definitely the right solution. Good job, me.
I'm not a trans women but last year over a dozen of my art featuring feminine characters with viable penis bulges got flag literally minutes from my posting them, while my equally nsfw woman without penises did not get flagged. So yes, this website has had a history of specifically transmisogynistic problems, even at a minor scale of posting fictional characters that wore panties with a bulge