when i was spamming HoV a few weeks ago (teeming and something else affixes) 3 out of 5 pugs i would join at a 13 or higher couldn't get past the pull after hymdall at the top of the stairs, 1 couldn't get past hymdall. PUGs dont know how to not stand in stuff, or boss mechanics, its just the way it works. The amount of bad players is astounding, how do you die in raid finder on Fallen Avatar before the ground breaks? it should literally be impossible. i joined a Raid finder KJ and noticed they had max determination stacks, noped right out of that one.
I think the issue is people just dont care, they want to be carried, go to LFR i think the min ilevel is 870? and people pull 250-300k dps, that isn't gear that's just people who dont know how to play their class.