What if I want to buy a device that is impossible to repair due to e.g. being inside metal/ceramics/glass?
What if I want to buy a car that has no lights,breaks and pollutes 100x more then the norms? There are many hardened phones that are repairable. Edit: also a main issue with repairability is DRM and evil companies trying to use the copyright law so you won't publish repair manuals and schematics. Your ceramic phone won't suffer if someone shares a manual about it's internals .
I certainly think that you should have the absolute right to attempt to repair your device, and you shouldn't be legally prevented from doing so.
On the other hand, I would like a secure, lightweight device, which lasts as long as possible on battery. All of those things will suffer if people who don't understand how modern phones achieve those things attempt to force them to be made up of piecewise-replaceable components.