This also counts for desktop Macs. Twice in the last 20 years I have had to explain to my elderly Dad that even though his expensive Mac could last another thirty years, it's now a paperweight, or something to be 'repurposed'. I have wondered sometimes if hardware manufacturers actively seek out significant road-mapped hardware changes (such as Intel>ARM, etc., in case of Apple) in order to keep sales rolling in and…
You have to be quite cynical if you see Apple's transition to ARM only as a ploy to get people to replace their Intel based machines. I am sure it is a nice bonus, but performance and efficiency just went through the roof. With yearly iPhone releases it is harder to justify upgrades. Like for author - upgrading from working phone to newer model while not gaining anything significant is stupid.
It might be helpful to think of them like cars: New models every year, but customers only "upgrade" every 10 to 20 years.