Andy,
I understand what you are saying and it is a valid criticism. Some of the areas at Rustic are playable and should be deemed playable, and I agree that it is a big mistake that they are marked as if they weren't. Sometimes better judgment should prevail over poor management decisions, but that is not my call to make (except perhaps with my own game.) Certain areas, such as left of the fifth fairway after the wash, are obvious places where it really ought to be deemed playable, even if it took cleaning up a bit in there.
But still, there is a heck of a lot of width out there, and some of the areas (like the cross-wash on five) have been converted to playable area. And recently they are trying to clean up some of the overgrown edges to make them a bit more playable (the area next to the bunker on 15, for example, and I think those tweaks are a step in the right direction.
As for your preference for Sherwood, well that is just absolutely nuts, as is downgrading Prairie Dunes because of a few lost balls. That place rules.
In my ever humble opinion, of course.