Good point, actually, near spot on - except it is you who see it as an insult, your perspective skewing it as such when all it was was a question as to the source of your alleged expertise on the matter.
I used to routinely get called female, much like Octavia did...... until I openly declared myself one with the 2021 revival of this account and the adopting of a female vampire avatar. I even got a timer once for using a standard quip posted by others dozens of times a day about assuming my [*blank*] when someone referred to me as a male. I never have said I was male, regardless what anyone said.
See, the thing is, the haters had tried to refer to me as a woman as a put down. Except it isn't, and thus it wasn't taken as they intended, and hence why I didn't bother addressing it (till 2021).
Sames with orientation. This ain't a dating site, so any confusion or discomfort on that end is for speculators to deal with on their own.