After seeing the title but before clicking on the article, I thought this would be about a legal hack rather than a security hole. More specifically, creating the minimum possible corporation that qualifies as an airline (so that you literally own an airline), and then saying to the government, "hey, we need the nofly list, we're an airline, see?". The actual hack sounds way easier, to be sure, but I still like my version the best.
I came here to make the same comment. Also, I now know that .gay is a tld and I'm trying to figure out how to take advantage, registration isn't terribly cheap, but the only restrictions are ones that don't apply to any of my ideas.