I had a family member call me because they were having difficulty with a light switch. They’re not dumb, just set in their ways and can’t be bothered to learn something else. Plenty of these people don’t like change just because it’s different. They got confused when windows started doing the rotating desktop pictures because they didn’t realize it was still their desktop. Do I think they could eventually use Linux? Probably. Do I want to deal with even more questions? No. Could they install it themselves? Absolutely not without help.