I saw a 10-boxer on Adamantoise. It was really suspicious, and definitely looked like a bot. Most legit boxers rely on /follow and stuff like that (unless there are new programs since I 3-boxed in WoW a while ago, but all legit boxers seem to use /follow), and they would get at least somewhat out of sync some of the times. When they're perfectly in sync and in formation it really looks like the values are hard-coded in in a bot/script, which would keep them in perfect formation than a dynamic real boxer.

Then again, maybe there are new boxing tools I'm not aware of, but I have never seen anything with such exact positioning and precision than I see these people. I'm pretty sure they're bots.