He says "simple", so I would say being able to understand and execute "turn off the lights in the second floor bathroom" probably counts. I'm sure he can do something like that in a year (even though there are programmers who can't).
I think a lot of programmers are under the impression that he is this idiot who knows a little PHP and got lucky building a website. But I'm sure he is probably better than the vast majority of working programmers out there, on account of building the initial versions of Facebook (and I say this as a working programmer). People just don't want to believe that because he seems douchey in many ways.