I have been asked, personally, why I don't make my email address clear on e.g. my about page before. I use discovery of my email address as FizzBuzz for my attention. If you're insufficiently invested in wanting to talk to me to find my email address, we will both be happier if you don't email me.
Perhaps I am deaf to the joke, but your email seems pretty trivially discoverable. The way you had phrased it, I went to your about page expecting a devious puzzle, and was disappointed.
His email is trivially discoverable in the same way that FizzBuzz is trivially programmable.
The point is not that it is hard; the point is that even a very very low barrier to entry may weed out a surprisingly large number of unsuitable applicants.
