Several things come to mind when I watched this. First, if David Wood's story is largely true, then he's clearly a sociopath and why should we believe anything he says? He could just be manipulating us for some sick purpose. On the other hand, if his story is largely false, then he's clearly a pathological liar, and why should we believe anything he says? Of course, his story could be partly true and partly false (my guess), but then the same conclusion holds.
Second is how persuasive even a terrible design argument like the one proposed here can be for a diseased or weak mind. Don't bother studying any mathematics, or computer science, or biology. Just assert that there is no evidence for the scientific world view, and voilà!
Third is what an ignorant bastard the guy is for someone who thought he was the greatest person in the world. He thinks shingles are caused by vitamin deficiency, fer chrissake!
Oh well. I am comforted by the fact that there's lots of decent people who are religionists. They're not all sociopaths like David Wood.