being new and @ level 50 is killing my interest

[Malevicton]

Then they can form a premade or not q. They are rewarded for doing so.

You're rewarded for completing the dungeon with a new player. There's no extra reward for waiting.

Waiting sucks I am not going to say it doesn't but personally I will never grief some one or kick some one for doing it and will defend their choice to do so.
The first week HW was out I got grief for watching cut scenes and have seen people get kicked for it

You can not wait on them while also not griefing them or kicking them. People getting kicked for watching cutscenes happens, but that's reportable and a separate issue from whether or not to wait around while people watch the cutscenes.