I’ve noticed it as well - apparently, the one I encountered decided on using a Wizard, for no discernible reason. Too lazy to level it up to level 5 to unlock Priest, I reckon.
I guess they’re what I’d call Chaotic Neutral.
Technically a violation of the ToS, but they minimally interfere with gameplay or give one specific individual an advantage over others (unless they use it as a way to easily farm CLands, for some reason?).