Earlier quoted context omitted.
This is less of an option when hardware makers fuse everything in to a single board so when one thing breaks you need a new main board which costs as much as the whole device. I have had a surprising amount of luck with some items though. Managed to replace the shoulder buttons on my 3ds by finding a replica of the button + ribbon cable + connector used.
What is the alternative, a vacuum that has 3000 individual components now and they are still not user replaceable?
And as 'jdnenej points out, and the thing that "right to repair" movement is all about: nobody says you have to do the repair yourself. Having serviceable devices means your technically skilled friend, or your local repair shop, can do the repair. Possibly charging you money from it. As a side effect, this strengthens local economies.