DPS is the job of DPS.

[Sorriow]

I don't get the mentality of these (for the lack of better word) bad FFXIV players.

If you are joining a random party, isn't it desired to perform well, so that the dungeon run goes smooth, fast and easy for most of the group? To leave a good impression? To actually make it fun for everyone involved in the group? Why would you literally disrespect people in a multiplayer settings because you "want to play the game your way" instead pulling the best out of yourself?

Is it because in your mindset, you think you are good players and don't need a change of playstile or (dare I say) advice from a random person?

I honestly want to know that without some funny guy meme'ing me a 1 liner because he thinks he is funny.

EDIT: for the sake of clarification: I draw a clear line between a new or low skill ceiling player that is trying to improve (even tho he really should know the basics at max level), and a straight out baddy who refuses to change.