It's not the type of attitude that is the hindrance. It's the people who aren't putting forth any effort to improve themselves. I can recall a time in Halitali hard where a bard was only using straight shot. I asked kindly if they'd use dots + buffs because it wasn't fair for the whole party giving their all. They ignored first time, asked again, they got angry and said something along the lines of don't tell me how to play (that was the last thing they got to say before i vote kicked.)
Sometimes people need to be kicked for being super bad, end of story.