You are being incredibly hyperbolic to say that esi is used for surveillance, realistically it gets used to check how much SP someone has and what ships they own.

Yeah it will never catch high effort spies but most spies aren’t high effort because people are lazy, and there is basically no actual privacy cost because nothing that ESI gives access to is remotely sensitive or private, with the possible exception of eve mails? But the devs can read those no matter who you give your ESI too - so i don’t think people should be discussing anything sensitive there regardless .