Most people view computers as an appliance to get what they want, like a toaster. They never think to install a different OS, if they even know how to do so or that Linux exists in the first place. Windows comes installed out of the box for every computer not made by Apple for the most part. My boomers aren't dependent on any Windows-specific software as their use-case is just a Facebook machine, so I put them on Fedora with GNOME and there hasn't been a single problem in years. They can even handle installing and updating software with the software center that GNOME provides. They were actually interested in trying something else because even the tech illiterate can see that Windows sucks now. All I had to do was pick the distro and DE and then install it for them. The distro could just as easily be Debian, or Ubuntu, or possibly even Arch. The DE just needs to be absolutely braindead so they can't hurt themselves by accident. Yeah, some use-cases require that people use Windows-specific software, but there's also a lot of Facebook machines that could just as easily be running Linux if the computers at the store shipped with it; Chromebooks are an example of this. And honestly, even the OS-specific software thing is becoming less of a problem as more stuff moves to the browser.