I think the problem is a pretty old one: you can't use technology to solve social problems. Encryption as a tool is great for some particular kinds of privacy, but using encryption to "fix" privacy was misguided from the start. Privacy is a policy problem; we need laws on the books that prevent both governments and companies from collecting and using data about us.

Rules like the US Constitution's 4th amendment, and laws like the GDPR (and to some extent, CCPA/CPRA) aim to do that, but neither goes anywhere near far enough. 4A often gets interpreted narrowly by US courts, to the benefit of law enforcement. And the GDPR enforcement mechanisms are far too clunky and -- at least from what I've seen so far -- don't work particularly well. Not to mention that, for it to be truly effective globally, the US would need a federal-level law to match it.

Encryption alone doesn't matter. If your social and political climate is not oriented toward privacy, your privacy tools can simply be made illegal.