Not so sure if this is ironclad. Like, if someone messes up the order of adjectives, a native/fluent English speaker would still understand what they're trying

Not so sure if this is ironclad. Like, if someone messes up the order of adjectives, a native/fluent English speaker would still understand what they're trying to say. The author also introduces Cambridge, Oxford, whatever, when the first ordering is pretty standard. For example, the common term for an tiny, aged woman in the US is, "little old lady." Size, then age, then the rest.