First of all, user didn't suggest that people would benefit from learning the basics of car maintenance but instead said that the car owners should learn how to

First of all, user didn't suggest that people would benefit from learning the basics of car maintenance but instead said that the car owners should learn how to do it. But to get to the real point, you are talking about two different issues as if they are one and the same. The car discussion is about not being interested in learning some things because you can just pay someone to do it while you do something else that you enjoy more. That it is easy to learn has nothing to do with it. The parent poster here is talking about intelligent people being unable to complete basic tasks on a computer, even though they are sincerely trying to learn how to do them and sometimes even having them explained in detail.