But yea, that's totally legit. Nothing to be suspicious about, here.
How on earth can the legit players stand this !@#$? I'd have left that (those) realm(s) ages ago. By sticking around, they are aiding the cheaters and benefiting from it.
This in and of itself is in no way proof of cheating.
It is highly indicative of a group of players (probably with an OOC connection) getting pissed off that their advantage is gone, and just stopping playing en masse.