I dont think hackers have much to do with the phenomenon. We have quite a few plants and they tend to have signed up in waves mirroring political events. There is one account Ive been watching for 20+ years because it glowed so brightly when it was created. They often make mistakes that give things away for someone who has had as much time during all times of the day as I have had to pop in on this board.
LOL! Class of 98, signed up just before the March for Justice. You would know, from long experience.
I've probably watched the same account. :)