Dennis ended up realizing he was wrong, but refused to retract his errors clearly. If you look in the long post at BioLogos, you will see him realize when he made errors. However he did not publicly retract his statements on the blog or elsewhere. Instead he came up with an ad-hoc argument to support his position.
So yes, now he agrees that Buggs and I are correct. However, that represents a major change from his original position.
This is what he claimed at the beginning of the conversation.
That turns out to be wildly overstating the evidence. He just failed to read it correctly. At this point, I do not trust his work on human population size and cannot recommend it.