You know the funny thing is that these numbers make perfectly sense when you keep in mind all the players that have left already and the introduction of the raid finder. I'm pretty sure that Blizz knows who many players are raiding - so the raid finder actually implies that right now there are not a lot of people raiding because otherwise it wouldn't make sense to implement it now.
I guess that Blizz figured out that a large amount of the available end game content (raids) is something that a large amount of their player base isn't enjoying.