Re: One less ...
what's 1500 years of usage set against the personal preference of one 18th century grammarian, which is how the whole less/fewer fetish got started
Yes. And the OED, in the passage quoted by another poster, is guilty of the worst sort of naive prescriptivism, with its talk of "error" and "strictly". Since the OED is supposed to be a descriptive dictionary, I don't know what that rubbish is doing there; but no one who understands how natural languages in general and English in particular work would pay any attention to it.
But the sophomores do love their shibboleths.