Countersignalling. By deviating from the “professional” look so ostentatiously, they signal that they are so good that they don’t need to use the usual look.
And then there are people like me, who seem to believe that if their resume spacing is off by a nanometer, then the entire world will view them as an unemployable failure.
I'd say it is a good example of how not to take yourself too seriously. The contrast is cool too! He's achieved quite a bit and expressed it in such a cool and playful way.
it helped him get an internship at Google where he worked on computer vision. the person who hired him said it was a great resume and he was the smarted guy he ever worked with.