Protesting the division among atheists is pointless: a brittle cult like the New Atheism automatically generates division among related types. It is always the case.
And it is useless also, whatever the case with Michael Ruse’s views, to cite separation of church and state, if the teaching of Darwinism is used to promote atheism in education.
Finally the challenge to all religion under the rubric of challenging monotheism should generate thorough hostility, step one. It is an indirect form of intolerance of an immense number of distinct things, including atheist religions.