This is not about one looking down at the other. It is, for some reason, some raiders are angry about people only raiding in LFR and earning LFR gear. The LFR raider is not getting normal or heroic gear. They are getting LFR gear. Yet some raiders are angry about this.
People are getting gear relative to their effort in the game. LFR raiders get lowest quality gear. Normal raiders get better gear. Heroic raiders get the best gear. But this is not enough for some. They don't want the LFR, even when LFR has no impact in their enjoyment of the game.