@nprofile1q... As someone who has been using grapheneos since pixel 3, I'd say any claims of lack of usability are nonsense. I now have a pixel 8 with grapheneos and my wife has the same. My eldest child has a pixel 7 with grapheneos and all of my children have a pixel tablet with grapheneos installed.
The only app I've found that didn't work was a banking app that used play integrity. I have four other banking apps that work just fine.