DeletedUser87 Google Camera required GSF as recently as April 2023. Without GSF installed, it would immediately close when invoked. There was plenty of discussion here about that just a couple years ago.
Looking back at my GOS notes, it was Google Earth, not Google Maps, that required GSF as a bare minimum dependency.
All of that said, it seems I'm conflating my recent app issues with GSF when the two may be unrelated.
Since the recent round of GOS updates, I haven't been able to open Google Messages. It closed immediately whenever invoked.
Immediately upon uninstalling GSF, I tried to test Google Camera because I knew GSF was a dependency when I first installed it. That test failed, in that Google Camera opened but would not display the viewfinder. I could see the gallery preview (last photo taken), the shutter button, and the lense swap icon, but they didn't respond when tapped.
As I use Google Camera daily, I tried to reinstall GSF only to discover it's no longer available from the repo.
I then installed the Google Play suite, and found that both Google Camera and Messages started working again, so I assumed the issues were related to the recent GSF/GPS changes.
However, upon uninstalling the Play suite and force stopping Camera and Messages, both apps continue to work today without either GSF or GPS installed.
I am now at a loss as to what was causing these issues in the first place.