As long as the requirements you set for a group match the level of content your doing, then I think that's fair. I'm not bringing a 8/12H to M N'zoth, nor would I bring a 800 RIO to a +20. But if you were doing something like a +15, I wouldn't be dead set on having a 3k IO, i think 1.5k is still appropriate.
And people that use "elitist" in a negative light are just upset that they play sub-optimally and are shit at an easy loot pinata game.