Just take a look at the WoW ladder, 90% of the pro players from cata, wotlk etc ... stopped playing, now there is only tryhards or nerds still playing it.
How is that Holinka's fault? The game is just less popular because the "new generation" simply doesn't play WoW, but games such as CS:GO or Dota. If I'd pay my 15 year old little brother he wouldn't even install the game. Ghostcrawler is not going to solve that. But I agree this game needs something new, why call WoD an expansion when they remove half the abilities to simplify every class to a three button rotation.
And yeah, only the diehards play this game now. A lot of times I wonder why people still play this game but I guess people can't quit the game because they invested so much time in it, and partially because of the community/ingame friends that keep them playing. Addicted forever =)