“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)
I’d argue that most of that perceived quality is due to image stabilization software and less about the camera sensors themselves. You do get more options now that phones have 4-5 different lenses, but the big problem with older phone camera quality is that they couldn’t compensate for shaky hands.
Phones have had optical image stabilization since like 2013. It helped a lot. But things have changed a lot since then.
Digital image stabilization will always be ass and is only really useful for video.