This is a Nazi's wet dream, because they have always been enemies of thought, and now they have a machine that eloquently sells their animalistic ideas.
I don’t think the quality that gives prose an AI smell is eloquence per se, so much as the use of common tropes and rhetorical formulae. The kind of rhetoric AI is best at is the kind that relies on appeal to a shared tradition of discourse more than on novel arguments or reason—and I think that type of rhetoric is more common on the right than the left.