Earlier quoted context omitted.
Standing against cancel culture is not the same as standing against social sanctions in any way, shape, or form. The problem with cancel culture is not that it's a social sanction. The problem is it's a particularly dysfunctional sort. "They're against cancel culture... so why didn't they invite me to their house party? What hypocrites!"
I think the difference between cancel culture and just freedom of association is the difference between "I don't want to work with you because of X" and "I'm going to influence others not to work with you because of X". Whether that be anons on twitter calling up your employer to get you fired, or PG having a quiet work with his friends over at some VC firm, they're both the same strain of toxic.
What X is, is material though. So as much as we want to be able to simplify and not get lost in the weeds of interpersonal drama, we can't just say any behavior in that vague direction is toxic. If X is "he is a bad person and is going to make false claims and lie and cheat and steal from you, has repeatedly done this, and there is legally admissible evidence of this", that's a totally different thing from X is "he looked at me funny and, I dunno, I just feel a bad energy coming from him" amplified by the social media megaphone.