A lot of long time XP bases have been lost. But I don’t think this is new and I don’t think PG is targeting them.
A number of xp bases I know were hacked bases using things like the old tower duplicator glitch and deserved to be banned. If you think about it people are less afraid of consequences on their alt, and many see xp bases as a sort of xp Robin Hood. Of corse the argument of why not ban more egregious violators is a thing, but I don’t think PG can’t really pick and chose which violators to ban. Everyone who violates the TOS gets banned.
Now with PGKMA - I suspect the name of the base violates TOS and it flew under the radar until the quests caused it to be noticed. (Be it because it was reported or it floated to the top of a report, or whatever)
I understand the sentiment of KMA, but I knew from the first second I saw him change to that name that it was only a matter of time before that backfired. It is of corse possible it had nothing to do with his name. He had posted in the forums a lot using that name, and it didn’t seem to get him banned then.