While not great, a private space or work profile with Shelter can work in a a pinch. I use it e.g. WhatsApp, where I just need three people, but which is almost unusable if you don’t give it the permission.

It’s a bit more annoying but also isolates stuff like photos etc. by default, so you don’t have to think about it.

Don't forget proprietary security patches are only open sourced 3 months after -- GOS has them due to their partnership with Motorola.

A sufficiently motivated threat actor will have them (the exploits) too.

GrapheneOS actually feels just like LineageOS, except that it has faster upstream updates, better security, and greater usability...

I don't understand why it took LineageOS so long to update to AOSP 17, while GrapheneOS managed to update to 17 in just 3 days. LineageOS really should be based directly on GrapheneOS.