Comment by whazor

This is what makes sense. You want to be able to replace the charging port, screen, and camera. And of-course update the software, where software stability is IMHO the weakest point of Fairphone.

If the logic board breaks, you want to upgrade to the newest chip model you can get. Because third-party software becomes slower every year. If you want a phone to last as long as possible, thus getting the latest chip. For Fairphone it is more interesting, since they use a particular Snapdragon model range with longer driver support.

The elephant in the room is of-course software getting too slow and developer not optimizing their apps.