Also a possibility! I've never tried to say "Things are this way"; I'm just listing possibilities. That's another one. Well done!
Ah, I see. You quoted a portion of Killian's statement — not, as it happens, the portion I was agreeing with.
Well, in the Forgotten Realms they were all uplifted by a single progenitor race, so they are in fact all connected. But that's beside the point — we're talking about what's possible in language, not what is.
What you quoted contained two assertions — I wasn't sure which one you were referring to, since they both seem pretty obvious to me.
Expedition to the Barrier Peaks aside, published D&D worlds in general, and the OotS in particular, tend to fall in a medieval-to-renaissance tech level. There might be exceptions, but this seems like a weird nit to pick.
Exactly! That's pretty much exactly what I was saying. Science classifies them one way, but in usage they're classified another way. In the same way, the rules classify yuan-ti one way, but common usage is free to classify them another way. Thank you!