I like how Dr Mohler has defined Christianity theology under 3 tiers, and the only one that we all must agree upon doctrines wise is the first, primary theology one.I do not call him a liberal because he is not, by definition, a liberal. I believe OEC and/or theistic evolution is wrong, but that does not, in and of itself, make someone a liberal. Otherwise, we would have to regard B. B. Warfield et al. as liberals. He has made ambiguous comments regarding homosexuality for which we are rightly critical of him, but I do not think that anyone in their right mind would regard him as really believing that homosexuality is not a sin.
That is because the Reformed believe in infant baptism, as we can see from consulting the Reformed confessions.
Yes, it is. I have been studying Reformed theology for 19 years, so I consider myself to be tolerably well-informed.