I think you might be reading a bit much into this painting...
On consideration, you may be right but in my own defense I am becoming more sensitized to George Washington and his place in history and I have been feeling it far longer than Glenn Beck has been writing. That statement from the current resident of 1600 Pennsylvania Ave on "60 Minutes" about ranking his administration 4th in domestic and foreign achievements, and mentions Lincoln but not Washington is a symptom. Yes, the White House spun it as 'modern presidents' and yes Obama reflects Illinois by including Lincoln - but still!
So pardon my screed but I remain firm, we have had great Presidents and lousy Presidents (guess who) but Washington remains "Primus inter pares" - "First amongst equals!"