I think it's excellent. A few simple rules (max stays, don't dump rubbish, etc) and then more or less freedom for the people that like that. We have "crown land" here in Australia but it's not promoted or branded with a neat brand/concept that encapsulates it as well. Often the "bush camping" is tolerated or at the mercy of individual councils (counties, I guess).

Roadtripped and camped across the US twice last year, and the jump in camping opportunities once you get to Colorado heading west is awesome.