Look what just happened in Duty !

[Lumiin]

Snip

I came to play, not teach everyone how to play their class when they had levels 1-50 and guides on the internet, if they don't want to learn that's their fault. A tip is something like "Hey don't stand there, when he casts that, come over here " a decently geared tank who can't keep aggro is someone who doesn't know their rotation, which means they have to be taught how to play their class.

No. If you don't know it by lvl 50, you don't want too.