DeGoogle Yourself

Not the OP but I find it really curious you trust Apple's custom silicon over Google's in such a way that you seem rather confident with your locked down, Apple-controlled OS... unless you root it but then GL getting security updates, which kinda defeats the whole point.

There are a lot of risk vectors and frankly if we're getting to the immutable silicon level the exploits are probably going to be filed under direct targeting level privacy concerns. GrapheneOS is really mature and has security experts so good at their jobs they occasionally apply security patches before Google, with all its funding, does.

Apple and Google were both caught providing push notification data (e.g. the service underpinning most of the notifications appearing on your device) to the authorities. Not to mention Apple argued in a court case that it's "unreasonable" for an Apple user to presume their activities are private from Apple. I believe that particular court case was about them constructing ad profiles on their users.

It's genuinely absurd to me that you just vaguely threw out some kind of blanket concern with Google's underlying hardware. I'd really love to hear if that's based on anything material. From information I know is real and privacy concerns that have been explicitly justified, GrapheneOS is the best choice on the market atm.