What lesson is there to learn? Social justice mobs face no downsides. If they're never punished, where's the lesson?
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)