>I think they did a check on the channels that banned user was subscribed to
Traditionally on IRC, you'd only be part of a handful of channels. Like 5 or so at most, maybe 20 if you do stuff like web development for different people or if you're a socialite. There's three potential reasons to have that many channels listed:
>1) Bot learning
1 could apply but is unlikely as there's no reason to reveal your bot if you're just teaching it. 2 Is possible, but trolling any part of /a/ is generally more of a chore than it's worth, leaving option 3 as the most likely candidate. My guess is it's an intern and he decided to shitpost on the wrong channel on accident.