It's pretty routine to run across complaints in World of Warcraft communities about poor DPS showing up to PuGs. When I say poor DPS, I don't mean the unfortunate soul who just dinged 80 and is running around in greens far below their class' hit cap. You would reasonably expect someone's damage to be fairly lackluster under those circumstances even if the person concerned is a great player. By "poor DPS," I mean someone at 80 who shows up to your Naxx PuG in full epics rocking 25-man raid buffs who manages to stay alive on each boss fight with a Bloodlust/Heroism...and doesn't manage to break 4-figure DPS. I've seen it before, saw it again recently, and am fatalistic about its eventual reappearance.
Questionable gemming and enchant choices tend to abound with these players, as you'd expect, and the cry of "He gemmed for Spirit!" tends to follow them around. Fair enough; it does happen, but as someone who's been leveling a platoon of alts through a sea of /headdesk pre-60 itemization, I've wondered whether the abundance of Spirit on pre-60 gear leaves newer or inexperienced players with a false impression regarding its eventual importance in the endgame. And it's easy to see how they could arrive at that conclusion; the stat is everywhere!