Why are low standards for dps acceptable?

[TheUltimateSeph]

But aren't the level 60 dungeons exactly what the game and the people are expecting from you - Doing a acceptable performance?
Sure, 'doing them for fun' is fine. But usually you do them 'for fun' only once, for the sake of MSQ progress.

Gardening is 'fun', decorating your home is 'fun', glamoring is 'fun' to some extent. No one will call you out on that.

But if you start doing the dungeons/roulettes for the sake of loot/gear/tomes, aka progress, you better put your back in it.

I'm probably misunderstanding you. Are you comparing something involving real life work like gardening to grinding tomestones for progress in a game and implying that gardening is easy while playing the game for progresses sake should be taken more seriously?