I get what you're trying to say, but would you ever expect that old man to attempt to install ANY operating system whether its linux or windows or temple os?

I think maybe you should be advocating for more OEM systems to come preinstalled with linux rather than windows. It obviously doesn't make a difference if they're using windows or Ubuntu, the general principles are the same as far as using a mouse, finding a minimized window, etc. People like that are never going to consider doing their own installs and should probably have some support structure that assists them like you were doing.

As far as people in offices being computer illiterate, companies need to do better training of their own or just give a basic proficiency test when they're hiring new people.