Specifically they can't break iPhones running iOS8 or newer. Which is available for quite old iPhones. I do not think this is an attempt to sell newer iPhones

Specifically they can't break iPhones running iOS8 or newer. Which is available for quite old iPhones. I do not think this is an attempt to sell newer iPhones to the small fraction of users they have running iPhones too old for iOS8.