I've literally never installed an operating system. I can pretty confidently say that most of the people I know have never installed an operating system either.

I probably could follow all those steps because I've had experience navigating my computer's BIOS, but most people don't even know what a BIOS is. To ask them to navigate and make sense of it without detailed instructions is pretty unfair.

The fediverse is a very niche place, and the general tech savvyness that's common here should not be taken as an actual measure of how tech savvy the general population is.