That's just a dick move bro. It's one thing if the person is not listening or arguing or trolling (even though my friends and I troll each other in raids after several completions). However just because someone hasn't done something doesn't mean they are not capable of completing that task. If you are truly elite then you should be able to teach, lead, and if it comes down to it carry other players. Otherwise you aren't elite your just an asshat that doesn't live up to what he labeled himself.