The average adult is unskilled to a degree that most of HN would find surprising. There's a really good article[0] on this from the Nielsen Norman Group's blog. 26% of adults in the OECD can't use a computer, 14% are unable to perform tasks like "find all emails from John Smith", another 26% are unable to perform tasks like "look through these emails and use the information in them to book a meeting room".

I think that, whatever definition of "normal" GP was using, it's automatically excluding anywhere from 45% to 95%+ of the population.

[0] https://www.nngroup.com/articles/computer-skill-levels/

These are not “another” percentage, these are almost certainly very overlapping percentages.

And by selecting upon adults, the numbers are already driven up. The young tend to be more skilled with new technology than the old.

They're escalating levels of technical skill, as defined in the linked article. I see no indication that there should be significant overlap.

While young adults might be better able to e.g. use Gmail, I'd be willing to bet most of them can't configure and recompile DWM, modify the gtk3 settings.ini by hand, or make changes to their xorg.conf.

Being able to install Linux is itself something of a quality filter. Without aid from someone competent, those who cannot ascertain how to write an image to a usb stick and get their computer to boot from it won't be using Linux.

There used to be Linux distributions that installed to one's C: drive and booted as a windows launch option; I haven't heard of that being a thing in years.

Apparently Wubi is still maintained by the community these days: https://github.com/hakuna-m/wubiuefi

That's rad!