Apple has vested interest in getting their customers to switch to a new phone often, and the average time to upgrade is absurdly low these days (less than 4 years), which is greatly influenced by battery wear and fall damage, so I don't think this argument is very persuasive.

> user replacement battery

It's not really the old kind of replace-ability, though. The only requirement is that you should be able to change it with commercially available tools.