Even if it were a disease, there's no evidence that humans introduced it. He made a good case himself for mosquitos as a culprit.
Again, where is the evidence for diseases making species go extinct? To argue this one would have to ignore the capacity for species to develop increased immunity to diseases.
More blame human garbage.
It's not "blame human garbage" if we humans actually did it (hunted certain animals to extinction, that is). I don't see why acknowledgement of the truth has to be avoided simply because it might be misinterpreted by some people with bad political motivations.
A good for-instance is the American Indians. They had no immunity to pox diseases and died in droves, even if they were far from the white men who carried the diseases to the New World.
I don't have a problem with the disease scenario per se, I just don't see how a very sparse human population could spread it all around North America, from tropics to ice floes, from east to west, in such a short time. Also left to the imagination is some idea of how all of these very different animals were somehow vulnerable to a virus that had probably never seen their RNA before.