Dr. Fleming is not a man to pull punches. His main point (I think), that any criticism of the Civil Rights Act should include a critique of the egalitarian assumptions that underlie it and the questionable motives that drove it, is sound.
However, I am not sure I agree with his critique of the Pauls, Ron more so than Rand. He seems to argue that politics and politicians are only useful to the degree they actually accomplish something, which requires compromise and pragmatism, but at the same time criticizes Rand for not falling on his sword and questioning egalitarianism. What I think he wants is a righteous truth teller and a political system full of truth tellers, but I am not sure how he expects to get there without tolerating some trimming (compromise and pragmatism) along the way?