Googling Kirby Urner, yoor course of study at Princeton was Philosophy, followed by some graduate Ed classes. Are you certificated as a math teacher anywhere? What math courses did you take, and no, computer science, while related to math, isn't math.
Yeah, I had New Math before moving to Italy and doing Junior English, OSR, then Florida for first semester high school (the worst school in the train), then International School in Manila. Then Princeton. Then School of Life. :-)
Nowadays, I think of Saturday Academy as giving Portland many shots in the arm, hoping to help it awaken from the long dull dream that his been Industrial Era education in our Gotham. So dreary, so bland.
I've never pretended to be a math teacher, just a parent with a pitchfork and degrees in physics and electrical engineering who was appalled at the new new math being served in the elementary school that owned my son based on the street address.
Considering you're trying to make waves in math education with a BA in Philosophy (is that where your self-revealed elitism springs from?) and Python in your quiver, I can understand your motivation to denigrate advanced degrees in math and sciences. A true "polymath" displays a range of knowledge that is a mile wide and a mile deep, but I'm struggling to find any depth to your approach.
Kudos to you for your Python instructor status in O'Reilly's online trade school (their book line has always been decent) but you mighy want to revise your remarks regarding "most PhDs as over-specialized larvae"; perhaps if you had more of the qualities of the polymaths you speak of your judgement would have more weight.