Preston has some beliefs that don't make a lot of sense, I agree. But his ability to reason about technical facts is not impeded.
There is no fundamental argument he makes that can be refuted soundly, besides just disagreements in opinion.
There is no fundamental argument he makes that can be refuted soundly, besides just disagreements in opinion.
However, when deciding whether to invest hours reading and discussing his latest arguments, the author's credibility is a factor.