I've watched about a third of the video and may eventually watch the rest. It's interesting to me mostly because the argument against adaptationism makes somewhat similar points to my own in my argument that evolution reduces genetic diversity so has a natural stopping point. I keep being amazed that this obvious fact is never ever mentioned though. Even if mutation really were the source of novel alleles, there have to be many stages in the processes of variation where it is fueled entirely by the elimination of competing alleles. Natural selection is one way competing alleles are eliminated, but as Myers is saying, NS isn't as big a factor in evolution as has been claimed. Simple recombination accounts for a lot of variation and most traits develop randomly. All of this requires the loss of competing alleles in any case. Funny how the discussion continues as if new traits could arise without the reduction of genetic diversity.
As for adaptation, seems to me I've made a good case that it isn't the organism adapting to the environment, as often as it is the environment's offering enough of a range of possibilities to whatever traits arise randomly in the organism, to account for most of the cases of observed adaptation.