Why does it bother you so much Chris? You seem to expel a lot of energy on these exercises.
Why do you assume it "bothers" me? It puzzles me when people assume every discussion on a BBS must be somehow personal or emotionally motivated. A lot of discussions are simple matters of fact, and this is one of them. Lots of fans have assumptions about canon that are simply counterfactual, based in false and misguided beliefs, and they get themselves worked up or worried or angry when they have no need to. Why wouldn't I want to help them free themselves from that needless worry or frustration by explaining to them how irrelevant canon actually is to their experience as fans? And why wouldn't I want to provide accurate information when I'm able to, just on general principle? I just see that as being helpful.