You could open an issue or contact the author:
F-Droid
F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
Matrix space | forum | IRC
As a workaround: I think GrapheneOS let's you sandbox apps, including Google apps. You might install the standard Pixel camera in a sandbox and see how it performs.
Risk in this setup should be minimal due to the limited access the app would have.
He could also disable internet access to the Google camera and use it on his main profile
I have the GCam installed, but it sucks for many things. Its the opposite of OpenCamera.
- uses the stupid
/DCIM/Camera
location, annoying for Syncthing - has literally no JPEG options apart from "bloat your device" and "save data" aka "bloat a bit less trust me bro
- everyhing is AI and weird, night mode is pretty good though
With GCam service provider (GSF) and GCam photo preview it works, but you cant use GrapheneOS sandboxed play services.