You are unimformed.
I spent three years on the BLM RAC in Nevada. It is a fact that when adequate routes are available, maintained and enforced new routes are not created.
Also, there are areas that have "open route" designations, like the one in your photo. Those areas are literaly open to travel across open terrain, road or not.
Mainstream eco-kooks know this yet lie to present the same mantra you do.
And you?
I've spent a lot of time in the woods too. The real fact is, dirt bikers love to climb up the part of the hill no one has climbed before.
I am glad to give them pieces of ground to ride on. It keeps them off the rest of it, we hope.
Man, you guys (and gals) are so lucky out west. In my state of CT, we have ONE small legal spot to ride out ATV's....it's pathetic.