Forbid (personally) targetted advertising and half job is done. Suddenly user data lose a lots if value and most dark patterns are centered around the gold that is the data. That said algo should be forbidden too, I agree with you. Or at last opt-in with warning like the ones on cigarettes (algorithms cause harm to your brain).

You can influence and still follow the law. And I am not talking about the shady stuff. Just tell people what you are doing and why are you doing it.