I don't see how this is for "Hackers"? It has nothing about security applications.
He isn't talking about HN readers but Joe Public. A few days ago our head of creative strategies passed my machine when I was doing a load of work in a terminal. He asked what I was doing and if I was a hacker. (I told him it depended what you define as a hacker).
For better understanding of the term, see "hacker culture":