I agree with him premise but not its totality. Most humanities business, lit, languages, foreign affairs, history, poly sci, geography, philosophy, religion probably not too well versed in logic and statistics. Econ and psych tend to use logic and stats pretty regularly though.
Well philosophy is pretty much the study of logic, but I see what you're saying. Poly sci, business, and probably history use statistics. But any humanities major from a decent school is going to for sure know how to cite a published source, which was my point of contention.