If this is RL, that would be serious historical revisionism even just omitting critical detail like that. Yeah i get how the Prima guide for New Vegas got some inconsistency but why deleted that?? It is not in conflict with any established lore as far i know.
If they also label info from other Bethesda devs in the same way, I guess it's OK (treating all info from devs commentary but not in official material non-canon).
Imagine just imagine if someone arguing NCR appearance in Mojave is pure imperialism and robber baron that want to expand their racketing empire. But you cannot have reference to argue against that because of the fact that they want to protect their citizens from further incident.
Or how the fact that it was Desert Ranger who invited NCR Ranger and thus NCR armed force as whole to Mojave, because of the situation in Arizona was getting too hot. And thus resulting in the reunification treaty.
@Alphons Hmm, if New Vegas got remade into Fallout 4 engine maybe Bitter Springs gonna be rated highly as food and water source. Too bad that Lake Mead is being mostly used for golf course.