batteries seem to be tricky for everyone (remember the exploding samsung notes?). visibility into the battery status and official replacements after 1 year for $30 seems pretty darn good to me.

more generally the useful lifespan of iphones is definitely more than a year. i was recentlu able to sell still-perfectly-functioning iphonr 7 for almost half it's cost new. my 3-year-old ipad mini only started feeling slow a couple months ago. this seems better than what my friends with android experience, anecodotally.