True to a degree but you can do similar things with thinkpads and keep them longer. The company can always extend lifetime by enabling repairability and upgradeability. But this goes against their profit since they then can’t sell a new product every two years. The consumer shouldn’t have to find ways around planned obsolescence and feel superior if they manage to solve this puzzle.

You gave an example where it is possible to install linux and only basic functionality is required, but what do you think happens with almost all mobile devices?

When it is not possible to change OS/ROM, or they are old, there is no alternative... apart from being stuck with an obsolete OS and apps full of known bugs. Or are you "competent" enough to develop everything yourself?

If you can do the same shit with solar panels or cars or whatever device that has a proprietary bootloader or glued together, then you can climb back on to your high horse.

Pretty much this. If you buy decent stuff and take care of it, then there's now less of an expiration date than ever before in my experience.

Computers 20+ years ago were really old after 5 years, but nowadays you can put an SSD into a PC from 10 years ago and it will be more than good enough for most people's usage. And if it doesn't have enough memory for the current windows 10 bloat, then Linux is an option, but imo it's better to just add extra ram so that the user can just stay with a familiar os.

Likewise tablets and smartphones, buy decent specs, don't use cheap chargers and don't drop them too often and they just seem too last. And if they do slow down, then a factory reset is easy+fast and can bring them to life again. In my family an almost 10y old Shield K1 still works smoothly for daily online media consumption. A cheap Samsung and Microsoft surface from the same era are now giving a horrible experience though, but those 2 were always shit in comparison to the shield.