One of the problems of cancel culture is #everyonedoesit. At some point, all of us have niche issues where we feel powerless in our individual lives, yet feel empowered when the mob goes up against individual X for something we care about. I'm convinced at this point everyone indeed does it, from the right to the left and so on. People treat it as a weapon reserved for those they hate and unfairness when applied to themselves or people they like. I'm not sure what the answer is, more empathy might help, but part of me feels like with everything else going on all of it stems from a deeper disintegration in US society where people feel like they've lost control of their own lives. These are just symptoms of that.
To further your point, Trump and Brexit are also symptoms of the same issue. I do not think 48:52 was a coincidence at all, the entire western world has been cut in half it feels. Worrying times.
I don't know why you're getting downvoted, but I too feel like they are symptoms, and the longer people take to pick up on that the longer it will take to fix things, if at all.