I don't know, if we were on a LGBTQ forum, I'd probably ask the same question about the "robotics engineer" bit, whereas the trans bit would be normal to mention.
I do see your point about points of commonality, I'm just curious why it was just that one and not hobbies, etc then. I just don't think that being trans should be pointed out as being "niche", I'd rather it was just your gender and we forgot about it.