You’re the one who brought in a personal political view, and basic history realize your claim, which is why you didn’t actually cite any.
I mean, what’s a good example of cancer culture? If some white guy says something horribly racist, and then he loses an election, he complains about cancel culture. But that’s a good thing, because we don’t want racist bastards in office. Of course he doesn’t see it that way. So he looks for some new term to describe the phenomenon, some way to make himself a victim.
The term itself was created by right wing people who decided to deploy it against those they didn’t favor, as an excuse to justify their own bigotry, but the idea of public shaming and goes back centuries if not millennia. Quite naturally, the establishment has a strong interest in public shaming if it will keep them around longer.
It’s curious that you claim privacy and anonymity are clearly differentiable but didn’t bother to define either of them. Is your claim accurate? We have no idea, because we don’t know what you’re talking about.
George Orwell, Philip K. Dick, and Corey Doctorow already covered the basics, and two of those authors did so decades ago. Why are you asking this question now? What is it that you want to hear that they didn’t already say? Or are you asking us whether we’ve read those authors?