It is impossible to “solve” problems like this, only manage them intelligently. Human societies have certain failure modes that are constant across history, and it’s foolish to assume that you will ever fully eliminate them. This means that reducing potential methods of political repression (via privacy, for instance) is more critical than attempting to create an impossibly perfect, airtight system, at least if you care about individual liberties.
> Human societies have certain failure modes that are constant across history, and it’s foolish to assume that you will ever fully eliminate them.
Technology shapes every bit of human culture. Nothing is constant.
While I agree that solving anything 100% is rarely ever achieved, there should be, at some point, an ability to mostly solve things in multiple ways. Even some that don't utilize privacy.
I'd prefer to have safety from that regardless of privacy.
I think privacy is a stopgap semi-solution to those problems that might lessen the pressure to actually solve them in a reasonable manner.