Theory: They tried to sneak in all kinds of things in this scene, but Disney shot down every single suggestion for the secret message and the writers had to keep coming up with lamer and lamer ones until they just said 'fuck it' and phoned it in, which ironically turned out to be clever.
The answer to this is probably the same as the answer to all the 'hidden' illuminati symbolism in the show, they enjoy messing with the kind of people that try to analyze it to hell and back.