I think the simple answer is that you will get more years of use out of a highly performing chip. App bloat is inevitable and eventually the phone will slow dow

I think the simple answer is that you will get more years of use out of a highly performing chip. App bloat is inevitable and eventually the phone will slow down. You might get an extra year or two out of a flagship phone than a midrange phone. Android seems particularly vulnerable to this bloat due to a combination of cheaper components bottlenecking performance, most manufacturers loading up the OS with bloat, and apps having to target a much broader range of devices and having that take away from the performance tuning you can spend time on in iOS. Take it all together and the new Samsung you buy today will probably feel sluggish much sooner than a new iPhone.