I agree with your first paragraph, though in the interests of authorial intent, I'd like to stress that I don't think that Dawkins subscribes to Bayesianism and I don't think that The God Delusion has anything to do with Bayes. I was saying, 'this is about as close as he gets to Bayesianism and he's not quite there, which is a pity because he would have made for a good advocate. The best you could say is that he's tacitly using similar logic in certain places, one example being the seven point scale.'
He does mention Bayes elsewhere in the book, so he knows what it is. But there's certainly little positive evidence for him having adopted Bayesian epistemology as a personal philosophy, which is rather more than knowing an equation.
http://bigthink.com/think-tank/neil-degrasse-tyson-atheist-or-agnostic
Apparently Dawkins and Tyson give a non-zero probability to "God". Which is pretty much what is expected of a rational person. And of course it will be used by theists to say "They aren't really sure!"