Durian-Pixel "don't make our precious grapheneos look bad, hacking is only done by powerful millionaires, its super expensive"
That is not at all what I said, and it's not specific to GrapheneOS. If you think compromising an up-to-date and patched Android device on decent hardware is easy or commonplace, you're sorely mistaken.
It was already explained to you how one can "easily" install stalkerware on an Android device in a way that doesn't require anything advanced, however that requires them having physical access to the device and being able to install an app.
Not only did I mention that, but I also gave you actionable steps (factory reset, don't reflash, if you've made an initial pairing with auditor, use it to check the integrity of the device with high security guarantees). Yet this is your response?
If you want to think you've been magically compromised by some imaginary zero day exploit chain that a normal person possesses yet nation states pay millions upon millions of dollars for, then I don't know what else I can tell you.