As a little bit of context, a lot of trans people (rightfully) view HN as a (white)-male dominated place, and feel misunderstood and misheard by the people here. A common defense tactic is to become _more_ sexually overt and grotesque than they actually are in reality.
A lot of the other thirstposting is, from my experience, very much genuine and heartfelt.
The trans community is often quite open.
I'm personally transgender, monogamous and mostly lesbian, so I'm a bit of a "boring" outlier when it comes to the poly & kink communities. But I spend a LOT of time in trans spaces. Online and offline. Professionally and casually. Younger and older. Political and friendly.
Etc