I don’t know that it’s an eyesight issue. I mean, if you have good enough eyesight to read stuff on your phone screen you have good enough eyesight to see the difference.
It may be an awareness thing, where the more you care about photography the more the limitations of the bad cameras stand out. And hey, that’s fine, if the phone makes good enough pictures for you that’s great. Plus, yeah, you can get phones with the exact same lens and sensor where one of them has a big fat bump that is deliberately blown up to make the cameras “feel” premium. There’s been a fair amount of marketing around this.
But if you compare A to B it’s very obvious. Camera bumps became a marker of premium phones for a reason.
This feels like one of those small innovations that will become a marker of quality once somebody thinks about them for a while. Someone will figure out how to make the perfect indicator visible in a dark-ish environment without emitting much light otherwise, or some other way to confirm something is charging and it’ll become the way you can tell which electronics are expensive. I, for one, can’t wait. My fiber box is wrapped in so much tape you could drop it from a tall building and it’d be just fine.