The point of the piece doesn't seem to be to add anything of value to a debate, rather than to grab some easy traffic and make a joke. Whether it succeeds at the latter is up for debate, of course, but given the aims, who cares about the grammar?

We should certainly proof the article better, but it was an experiment. We paid $150 for the graphic, it was done and an overseas fellow in a couple of weeks. I sent him three emails so the overall work was about 15 minutes and cost 150 dollars.

Fair enough - I clearly missed the point. :)

That's why it's so funny: that's exactly what infographics do.

This post is textbook satire.

EDIT: see my sibling for proof.