How does SE justify these ten min enrages, but doesnt let anyone know their dps

[Reynhart]

Well those are just jerks, you have them without parses too. I avoid those people too because I think they are an embarrassment.

Sorry, but with that sentence :

The only excuse to be anti-parser would be playing the game laid back without any care about your own performance or straight out not wanting to bring anything to the table.

you're part of the problem, even if you're not outright kicking people all day long.

[Atreides]

Sorry, but with that sentence :

you're part of the problem, even if you're not outright kicking people all day long.

That might be your opinion and you have every right to think so about me as you don't know me.
What I meant is that those people most likely don't even know how bad they actually perform, me calling them out would do nothing. Giving them advice more often than not doesn't help either even with a friendly thone because they think they do good as they get through the dungeon...
I only had one time where someone took me up to the offer and he actually improved by a alot. Some people just need that little push or they are left in the blind.