Earlier quoted context omitted.
I think the point is this had been around for a while, and what people are calling "cancel culture" is the same old-same old, but with (hopefully) less prison/death. There's nothing new about receiving negative feedback for having and expressing unpopular opinions. That's really common in pretty much every single social group I've been in, including on HN.
People are upset now that the current is shifting and you get shunned for being racist, rather than being shunned for not speaking properly or whatever the heck. The underlying mechanism has not really changed.
Nobody gives a shit when Uber classifies their drivers as independent contractors to stiff them on benefits, but everybody cares about the propriety of master/slave replication terminology. We're dealing with police violence by capitalizing Black in our style guides. Etc etc etc.