It’s apparently supposed to make a distinction between trans people before/after bottom surgery. I doubt that’s a common use for that word, but I still have a few points against that specifically:

• I don’t think it’s ok to make a distinction those in this way
• It straight up ignores that not everyone wants bottom surgery
• It’s not even the way ‘-sexual’ is used normally.

Most people just use it interchangeably with transgender to my knowledge.

If I hadn’t heard of it in context it’s commonly used in, I would think that it’s the attraction to trans people.

Idk if I’m making any sense here, I suck at saying/writing things that do