Earlier quoted context omitted.
I suppose we have different perspectives on what the general public is capable of. Who's talking about capability? I'm sure the vast majority of people are capable of it. Likewise, I'm sure you're capable of performing lots of the services you pay for. Nevertheless, we all decide differently which things we want to do ourselves and which things we like specialists to do for us.
Who isn't talking about capability? The claim was "Everyone should learn how to change the oil in their car, though." , not "Everyone should change the oil in their car, though." The inability to change your oil is frightening on the same level as the inability to connect yourself to wifi. I don't give a shit if you get your oil changed at the shop, or if your work computer automagically connects to corporate wifi ou…
You learn the things you're interested in, the rest of us will each learn the things we're interested in.
You can be frightened about that, but it's frankly overbearing.