I see people claim people are constantly buying new flagships but I’ve literally never seen it. Everyone I know buys a flagship and keeps it for 2-3 years at least. If you’re intelligent about taking advantage of trade in offers you can get a new flagship every couple years for a few hundred or less.

I moved from an iPhone XR to an iPhone 13 for free… and I’ll probably be able to do that again (or close enough) when I move to an iPhone 15/16 in a few years.