Amen. And that mindset is all over fantasy discussions, as if one single writer has defined the entire existence of a creature. 

I get this a lot with Drow, as I've never read any of R.A. Salvatore's work and occasionally write or roleplay them. Apparently my ideas don't quite fit the mold, which earns me a tongue lashing (the bad kind) ever once in a while.

And the elves in my only Elf story speak a variant of Mandarin Chinese. ^^