So I don't get this. Yes, my N=1 experience, but: I don't put my phone in a case, and only use a screen protector. I have a Pixel 8 (arguably one of the more notoriously ridiculous camera bumps), but have of course had other phones with camera bumps before this. I am generally careful with my phone, but of course I've dropped it, knocked it off a table onto the floor, etc. But I've never ever scratched the camera. Have I just been lucky, or are they harder to scratch than one would expect?
On the other hand, the cameras on plateaus are real issues because they don't lay normally and the cameras are very easy to scratch.