It's a major scandal for our industry that decades in, there is no general purpose bootloader and OS install method for non-x86 devices.

I have these perfectly fine ARM-based Android tablets lying in my tech stuff drawer and there is no way to keep them useful few years after the manufacturer unilaterally decided to EOL them, while I can put Linux onto any 15 yr old laptop and keep using it (granted, as long as it has a 64 bit x86-CPU).