It isn't actually a new or revelatory epiphany, but has in fact been 'uncovered' and discussed quite a number of years ago.
The basic idea stems from the fact that there were several groups of environmentalists (SUWA, UWC, UWA, etc.) who had their own ideas as to which areas had which values and why they thought they should/should not (rare) be included in the WSA inventory. The BLM had published *several* Proposed Drafts (usually comprising several volumes of some few hundred pages each) encompassing revised plans and so-forth.
As of the more recent years, newer reviews and revisions were made to include other latter concepts which extended beyond the confines of the relatively strict definitions of a WSA. As but one example, areas such as the Labyrinth Rim(s) would be one such 'recent' proposal as an area to be given a particular form of protected status.
Basically, I would question any inclusion which stemmed beyond those initially inventoried - and would even question *some* of the claims of 'criteria met' which were among the first to be selected as WSA's for such ultimate WA's. (If finally approved.)
Capt. Picky