It could also be crz issues. when I /who stonecore I only see 3, but if I suicide dismount in deepholm and look at the entrance it's still a wave of druids
ps. the prtnscreen is from a dead realm. I did some more on more populated, all 50+ bots
EDIT: Tried it out just manual play. Got like 200g in 10 minutes with a DK, which is not optimal. And then add in some wallhacks and feral druid speed and optimal profile for their haxbot... I think they are probably pushing 2-3k an hour doing karazhan.
yup they still there just not in stonecore/grim batol anymore.. they wont be gone until blizzard fixes cc fraud (actually doubt they can do anything against that)