Yeah, that's the point, Tor alone will never solve the underlying issue. Greg Maxwell has addressed this and he is also concerned with the current model, you can watch the video where he explains the elements project and he addresses CI, and also points at the need to mask the movement of coins, because for example, your landlord could see that you got a raise in your salary, and then decide to raise your rent.. there are all kind of ways that prove we need better privacy without anything illegal involved.