They weren't telling him he can't post about Zelda because it's not an RPG, they were just saying that it isn't an RPG because he made the claim that it was.

My favorite Zelda... Not really sure. Really liked LttP, LA, OoT, WW, and TP when I played them. My choice may be a rather strange one that few people would agree with, however: Zelda II: The Adventure of Link. It is the first Zelda game that we owned, and so it holds the most memories for me. And it hasn't gotten old, like LttP has (I played that one to death during grade school.) Or maybe it's just the return to the retro gaming experience that it gives me. Anyhoo...

Wuv, Yer Mom