What punishment would you inflict for "getting mad online"?
The perpetrator and instigator of the problem has been caught and is highly likely to be punished for it.
I would hope a lesson might be "we negatively impacted this man and we did so without knowing all the facts, we should do better next time". I'm idealistic.
It's a timeless tradition that transcends time and culture. Probably not going away any time soon. At least these mobs are mostly non-violent.
"If there's one thing to learn from all of human history, it's that we've never learned a single goddamn thing from all of human history." - Robert Evans, a podcaster (Behind the Bastards)