Your argument wasn't limited to Bards, the same goes with every DPS class, what I asked you was what's your criteria in determining a good BARD from bad ones and you answered about dungeon mechanics from a LOW LEVEL DUNGEON which isn't even a factor in determining a good bard from bad ones in end game contents. It's not being lazy, the fact that it is doable without breaking it, why still go for it, is it more rewarding if the DPS breaks it? "It's simple as that."
In a progression-based game like this, only end-game mechanics matters if something is doable without following the mechanics. Heck, most ppl are actually trying to bypass most dungeon mechanics instead of doing it because it's one less mechanic for them to deal with.