My original claim was that it was fantastical to suggest evolution was arrested, not slowed; however, your point is more nuanced and interesting than mine. With this in mind, I'd refine my original statement.

I find the idea of a stable rate of evolution curious. With respect to your argument, we are in agreement: there is reason to suspect that evolution as a reaper has become more tolerant; on the flip side, I'd argue that genetic diversity is increasing, as a consequence of with an unbridled phase of expansion. In this sea of diversity, the genetic victor exists, to be revealed during some future event of punctuated equilibria.