look at the maps: "obliteration" (in red) is planned for weaving, branching, and other miscellaneous extensions of official trails - I don't see them impacting the major existing routes, since as far as I can make out from those maps, neither the main trail nor some of the popular side spurs would be affected by closure
to me it looks like they feel they need to be seen as busy on something in their territory
and as far as the "obliteration" goal: traces of previous human occupation and travel in the desert are not all that easy to cover up; usually takes quite a few years/decades for natural vegetation/habitat to take over, unless there's help from erosion during storms - the rationale why they feel spending money on this is a priority is not entirely obvious to me given the many other monitoring/enforcement issues that could/should command their efforts
it's important to keep in mind here that the Bulldog Canyon trail basically runs along historic telegraph and powerline routes - and this needs to be pointed out to Forest Service and other officials who may not know (as they commonly are recent transplants from elsewhere)
I am not in any way inclined to discount the impact of these proposed actions, or trying to let the FS get away with closing popular 4x4 trails, but from what I see outlined on those maps, travel on all of our favorite routes will remain open - that is excluding Kavik's Hill, which has been closed off for a number of years already
that said, I am all in if the group feels we need to lobby the Forest Service for changes to this plan, willing to write letters or advocate as appropriate and as consistent with club decisions and actions on this matter