All the Apple marketing sure does a heavy lifting, because even comparing with a 5+ years old iPhone camera, the new one isn't noticeably better. Take any 1" sensor proper camera and it's so, so much better than the iPhone's…
Even just carrying around a small Micro 4/3 camera gets you 3x the sensor surface area of a smartphone. An APS-C Fujifilm like an x100V gets you 5.2x the sensor surface and is still mostly "pocketable" (in a bag).
What the iPhone has effectively replaced though are the old point and shoot digicams, which now have smaller sensors than the iPhone.
In recent times I have travelled some insanely hot places. And every extra thing that you carry with you feels like such a burden. But the phone you always have with you.