I think you’re assuming too little and assuming too much of average users at the same time. Either you don’t deal with them or have forgotten what it was like to be one.
normal users install software. OS to a user is just software. let it be installable like MPV, VLC, GIMP, Regex cleaners, games, …
just because you know what linux is doesn’t mean you understand Rufus, the BIOS, partitioning, ISOs vs EXE, etc.