I agree — but in practice, once data exists, it tends to become streamed, stored, indexed, searchable, and immortal. It’s the nature of data to want to be free which cuts both ways good and bad, and is why sometimes the only way to have privacy and freedom is to not record in the first place, unfortunately.
This is why anonymity is necessary for true freedom and privacy. If data _can_ be traced and connected, it will be. This aligns with a 1995 Supreme Court opinion (McIntyre v. Ohio Elections Commission), where Justice John Paul Stevens wrote that "anonymity is a shield from the tyranny of the majority," noting that it "exemplifies the purpose behind the Bill of Rights, and of the First Amendment in particular: to protect unpopular individuals from retaliation... at the hand of an intolerant society."