The iphone 16's camera bump is 3.5mm. Short of making your own case that makes the bump a Pixel like bar, that wont be solved by just sticking a case.
On photos, it is indeed a very personal topic to many. In particular someone taking dozens of random pictures everyday won't have the same use case as someone being a lot more deliberate for each picture for instance. A one size fjts all approach isn't helpful IMHO.
Why even have a bump? Make the phone thicker by exactly that amount and increase the battery. Then the phone is flat and has a better battery life. Are there uses who actually prefer a bump?
Speaking for myself, I'm fine with it on Pixel phones.
I'd be happy with more battery and no bump if:
- phone makers gave up on the glass backs and metal, and made the body plastic (no more "premium" feel for the sake of it, I don't want heavy and fragile materials)
- the physical durability was balanced with the additional weight: dropping the phone the wrong angle shouldn't mean a guaranteed cracked screen.
The current Pixel9a would be near perfect balance for me, if they gave it better cameras and internals instead of making it a budget phone.
Given that 3 years later they have stopped producing phones with bumps, I guess people really prefer battery to bumps ¯\_(ツ)_/¯
Like others a case has always made the bump a complete non-issue for me. My iPhone has never wobbles when laid back down on a table.