I think he's saying that you're too willing to believe the reasonable, plausible explanation that falls out of Occam's Razor, as opposed to accepting whatever embattled fringe theory of the day also fits the available evidence.
It is almost like Occam's Razor proposes some type of probability distribution, not discounting the fringe completely but suggesting as a heuristic that the most simple is most likely.
Some people though seem to like this Anti-Occam's Razor that the most complex and interesting explanation is most likely even though they have to know from everyday experience that is simply not true and not how the world works.
