Well, based on my observation and advanced sense of humor, let me start by saying that I don't trust your sense of humor, since I've noted none yet. So what you find "hilarious" is irrelevant to me.
Again, taken alone, the President's acknowledging of "Q t-shirt guy" is, as you say, proof of nothing. But taken with all the other proofs combined and considering the "big picture" (I know it's hard to think of more than one thing at once and analyse it) it IS relevant.
It requires you to "Expand your thinking" like The Donald's operative Q would say.
Bagster