This situation reminds me when killing Twin was a thing in my FC. The healer was tired of people wiping over and over on dive bombs and kept saying people were bad and stop doing shit. This is an easy fight, why are we still wiping on this. That guy is a really good player, don't get me wrong. But his attitude was shit. The group got tired of him and they replaced him with a healer that never entered T5. It took them two days to get Twintania down when they spent a week with that guy.

They taught that healer the fight, she did mistakes but they were patient. They didn't get paid, their reward was the kill of Twintania. I'd rather be with a bad player than a good player being a bad person.

The usual scenario is the person who'se doing something wrong will almost all the time want to improve. But most players will think he can't and they don't give him a chance.