Man it's crazy how the bans just alternate back and forth, either they're a junior or have a history, and if they can't fit it into either category then it's a troll account
And it's not just a ban justification, it's also to make everyone else feel more comfortable with it, "oh you don't have to worry, he was a bad person anyway, he was a new guy who came here just to troll, or he had been making trouble for a while and finally slipped up"