Pain is still pain. :) Pain that is less painful or long-lasting than my pain is still sucky and I endorse your right to whine about it.

I agree with you, although the question of canon as One True Text gets more complicated in fandoms that have internally inconsistent fandoms. (e.g. Star Trek, which is more or less the Original Fandom even, and comics fandom, which... well, Pick Your Own Canon, for reals.)