You can’t let other people affect you in that way. If we’d let all the *****s of this server affect us, we’d be the same.**** happen and experience might be bad, but let’s not do anything bad on purpose. Just by doing that, we should do enough.
I can’t remember what that boss does, but you guys must be doing something wrong if people are getting one shot. Might be even tank’s fault:P However, it doesn’t matter.
You can refuse, but just leave. Leaving is refusing, isn’t? That’s what’s fair to everyone. Gameplay and failing to kill an NPC is something different.
Edit: If it’s easier for comparing purposes, avoiding to do specific dungeon because you don’t like something is exactly the same as afking in BG, or even slightly worse as 1 person in 5 man group is way more improtant then 1 in 15 or 25 and we all know that being afk in BG is against the rules. Quite simple?