"Citizens will be on their best behavior, because we’re constantly recording and reporting everything that is going on" - Larry Ellison
(I seem to recall from the context of the quote, he isn't saying this is the future he wants, but it's a future he's not particularly opposed to)
But the real threat is "accidental" database leaks from private websites. Let's say you live in a state where abortion isn't legal, and you sign up for a web forum where people discuss getting out-of-state abortions. As soon as that website is required to collect real names (which it will be), it becomes unusable, because nobody can risk getting doxxed.
When I challenged him on his rhetoric, my comment INSTANTLY disappeared. I thought maybe it was a fluke, so I tried again, and the next comment insta-disappeared also.
Soon thereafter I was locked out of the account and asked to provide a "selfie" to confirm my identity. (I declined.)