Earlier quoted context omitted.
Your experience is not at all what I see out there. Most people I know only get new phones because their battery will no longer get them through the day. They hate having to set up a new phone when their old one is totally fine other than the battery. For the people I know that do upgrade their phones regularly, they typically want to give their old phone to someone who would love a usable phone, but can't afford a n…
I can't speak to the experience with Android but Apple offers both in-store battery replacement or Mail-in battery replacement for $70-120 which to me seems very reasonable. Could it be cheaper? Sure, maybe I guess? But $70-120 is a lot less than a new phone. And this way we don't need to compromise the shell of the phone with seams and things that can fail. https://support.apple.com/iphone/repair/battery-replacement
It's a philosophical thing, sure. But the EU is taking the approach that businesses should make honest money by selling quality products, not through consumer-hostile practices like inflating the cost of spare parts + labour for fixing stuff.
In the past our family has had several Android phones where the battery was easily replaceable. We even had a couple of Motorolas where the screen was a simple and cheap thing to replace. That seems to be increasingly a thing of the past.
With those phones, I have never once experienced a failure mode related to seams / screws holding the phone together. If it's one thing that's extremely well known technology, it's fasteners and gaskets for consumer products.