Mocha: "I can’t open that link.
My comment was on the change in description from primitive to pristine"
I can't comment on the change but you may find some of the content of the thread brought up by Jakthund of interest. It seems to be part of internal USFS terminology/nomenclature that isn't explicit in public literature but slips through from time to time.
Fixed link:
Primitive and Pristine forest in SNF