I think its pretty clear as to the people OL was referring to. He used the term "hardcore evolutionists" not as just any evolutionist, but as those "hardcore evolutionists" who claim to be for small government to justify their liberal [social?] stands, yet stand in great support for and are always talking about the public school system which is a huge, liberal, coercive government monstrosity. Small government? Hah. He is showing the hypocrisy which may reveal the true motives of those he is targetting.
Well, again, you can't necessarily equate a belief in evolution with liberal social views. At most, you can equate it with those who do not accept a strict literal interpetation of the Old Testament account of Creation, but that has nothing to do with politics or whether the government should enforce the teaching of one curriculum over another.
I don't think it's the federal government's responsibility to get involved in schools at all, since the Constitution nowhere gives it that power. That probably is a small libertarian view, but it also allows that local schools could teach creation or alien seed pods or whatever they want. I think it's up to each state to decide what mush they want to serve.
But that's currently not the law, and probably never will be. Once we surrender local control to the federal government, we never get it back.
My point is that there are plenty of conservative folks who are convinced of evolution, and it clouds the discussion to paint them as something else when it's just not true.