You called that one.
He provided no source at all, while doing the “no source would be credible to you” dance.
That is typical creationist “scholarship”. Make unsupportable statements and then say “you wouldn't accept any evidence” despite the fact that they haven't offered any.
That and the typical ‘You are just a liberal’ accusation inherent in the “Columbia” statement, as well as the idiotic assumption that I am a Catholic or would only accept a Catholic source as legitimate.
Far from calling anything, it was just another assertion unsupported by any evidence. Typical.