It is much much much more complex than that. I have several old Android tablets that I could use for a hundred projects after installing a proper FOSS operating

It is much much much more complex than that. I have several old Android tablets that I could use for a hundred projects after installing a proper FOSS operating system and software, from IoT monitoring to communication, media playing, electronics etc. if only their manufacturer didn't tight close them to ensure they become obsolete when they decide so. These devices didn't turn (yet) into a couple Kg of electronic waste just because I know there still is potential to make them useful, but the reality for most people is way different: as soon as a device becomes obsolete, it is thrown in some landfill and replaced. If right to repair would also mean manufacturers forced to unlock bootloaders and release enough documentation so that software can be ported to old devices, the implications will be huge.