I don't understand how the writer of this piece can't wrap his head around the logic here. That someone doing something for 10+ years is probably going to have

I don't understand how the writer of this piece can't wrap his head around the logic here. That someone doing something for 10+ years is probably going to have a better understanding of it than someone doing it for significantly less time. This goes back to that whole 10K hours to mastery concept. The other bit boils down to passion/motivation. Someone who's been geeking out on computers every day since they were a kid likely did so because they really enjoy it. Whereas someone who started doing it in college because someone said "this is where the money is at" is likely to be less passionate about it. To me this all makes perfect sense.