The move to first is "iffy". It's that 45 degree thing.
He got called for the 45 degree move a few years back against the Nationals in San Diego. De Rosa was on 1B and they called him for a balk. What people find odd is the quirky move with his left knee (and Strasburg has a little quirk in his right knee in his delivery that he sometimes does and sometimes doesn't) but as long as it's part of his "natural" delivery and he is consistent with it and he doesn't pause after moving his left knee then he's good.
Also, FP is full of crap. If Richard pitched for the Nationals he would praise him for such a good move to 1B.