Why are low standards for dps acceptable?

[Andrea]

I treat people online the same way I treat people irl. With compassion. With respect. Until they give me a reason to not do so.

This ^. First offer advice in a way that isn't rude, if they reply in a rude way or don't wish to change how they play kick them. Don't say anything back at all just kick them. If they want to waste peoples time and be rude about it even after they've been informed so be it, but its back to the queue for them.