Correct, though I have since met a few of them in person as I do maintain an acquaintanceship with them.

Coincidentally, it has made me extremely aware of how people type online and it makes me keenly accurate on whether someone is "trans" (or considers themselves trans, which is far more common now -- thanks, media, government, doctors!) M t F.

I can generally tell the difference now, but not when I was younger and still meeting new people.