“For better cameras” like… I don’t see it. Back in the mid 2010s and late 2010s before the bump trend iPhone, Google and Samsung had the best phone cameras, and both were flat and with decent digital zoom and stability (for a phone). If you look at the photo samples for back then and compare it with now the difference is almost imperceptible.
That ugly bump makes big phones even harder to use and weight more now, plus if you’re one of those who never liked using a cover now I bet you’re forced to use one because of the added vulnerability of the bump.
Edit mid 2010s to late 2010s (until the camera bump appears around 2018)
Here’s some pictures from a Google Pixel 1. There’s a reason they never advertised low light handheld photos because you basically had to take 20 pictures of the same subject to get one that didn’t exhibit some kind of motion blur. Optical stabilization reduced all this dramatically.
They had to have large amounts of post processing to make up for the small sensor and relied on AI to clean up your image. Personally I always prefer to have good source images and leave upscaling as a last resort.