Then like I said your analogy doesn't work. I've never seen a scenario once where it was advertised that it's for fun and casual. And 2 try hards join a team of 6 casuals and tells them how to play. If you join a "clear" group you have to have a minimum skillset to even beat it. You honestly can't even compare this to basketball. Basketball analogy would better fit PVP.

At what point is it unacceptable to play "for fun" in a objective based PvE mode. When players start running through gathering all the mobs as healer and dies over and over. When someone purposely makes behemoth in like crystal tower destroy rocks so you wipe cuz it's fun? I mean he advertised "it's for fun" so he can wipe on purpose for fun right?

Where is the bottom limit