I'm sorry but what? I replaced my previous mobile (OnePlus3) because of the battery - after about 4-5 years it became quite difficult to get through the day on single charge, and in the world where everything is getting more "electronic" (tickets!) it became a problem.

Yes, id didn't have newest 5G, but guess what - my new phone has it yet I don't have coverage. Storage could wear out but are you really doing load IO test on it? screen burnin/crack... maybe if someone is glued to the phone "24/7" and doesn't take care of the device... but as I said - using good policarbon materials (including for screen!) would get rid of this problem mostly...

That's a sample of one but we're talking about millions in different countries here and a bit longer timescale than here. I don't think phones could last say 10 years with battery swaps and nothing else.

ditto, but right now people switch phones every two years, if not every year...