All I'll say is that as a Mage that missed the initial wave of players leveling and repping up due to reality intruding the attunements were functionally impossible. I couldn't get to Revered with the various factions without running the Heroic versions of their dungeons, running them over and over. I would try to form groups for hours and nearly always fell either a tank or a healer short. I only managed to run a handful of the Heroics I needed to run and was locked out of raiding until Blizzard lowered the required Rep to Honored sometime around Black Temple IIRC.
What a nice misrepresentation of what it was like.
Sure SOME people did not like the attunements
Sure SOME people were rude to eachother
Sure SOME people were scared of the fellreaver
Sure SOME people took ages finding a group
Sure SOME people had issues keeping a tank or healer in their group without it dissolving
Had I ANY of these issues? Had ANY of my friends ingame these issues? Hell no!
What I agree with (but due to it also had a blast) is that I did not like needing to be revered (yes before it was nerfed) to be able to do heroic dungeons. I spent far too much time running these "normal" dungeons before I could finally do what I wanted to do = heroic dungeons (before they got nerfed).
The rest was pretty much awesome.