I agree that devs should not anticipate content/patches that aren't 100% sure to go live in not too long time.
But I don't agree on the starting point: Paying customers DO deserve an answer on critical stuff (ie. the lag bug that's ignored by devs right now. They haven't even said that they're looking into it), even if they're "terrible people". Learn to cope with it, community relationships are part of your job, on a MMO game.
This is another reason why WoW has so much success: The devs listen and answer on the forums and know how to deal with the fanbase.
That part of the article just looks like a whine.