"But we defend the right of individuals to believe whatever they want in private, not suggest to them that they suffer from some evil genetic disorder or whatever."
I don't understand the relevance of this. Nobody - including Dawkins - suggests people should not be able to believe what they want, and not only in private; and absolutely nobody I have ever heard of connects this to a 'genetic disorder'.
You say a 'false dichotomy' between 'ultra-materialists' and moderate Christians. What's an ultra-materialist? Are you advocating a kind of Deism (" he created an imperfect world for imperfect people to live in, with functioning physical laws, then left it at that")? *is* that compatible with Marxism?