When you grow up around something being easy to use, you lose the intricate understanding that used to be necessary.
For Gen X and Millennials, it's probably cars and/or electronics.
Busted light switch cover? Better call an electrician "just in case".
Need to replace an air filter? Better take it to the shop.
Not sure where the line is, but I had a Gen X woman tell me that she needs to take the car to the dealership to get her air pressure adjusted. When I showed her how to take off the cap on the tire's air pressure valve, she looked at me as if I had just pried off her steering wheel, lol
Not sure where the line is drawn, and there are definitely some people in those generations who know those things. But I'd bet Boomers and earlier generations had a better understanding on average.