What the original post says is exactly what has happened around here. The Peak District National Park is now following fully in the footsteps of the Yorkshire Dales National Park.
The OP sounds like a trail (motor) biker or 4x4 driver. YDNP has gone out of it’s way to ban/curtail/manage motors but at the same time been fantastic for MTBs. It has not closed or restricted any routes at all for MTBs but in fact has created several new bridleways, specifically to encourage MTBs. The Park thinks, and I agree, that trail/scramble bikes and 4x4s have no place in a national park but should leave the outdoors for walkers, cyclists and horses.
Motors have tried many times to get MTBs to support them, by saying “when we go, you will be next” but have always failed. It is a false argument and would only fool MTBers that have not really taken a long hard look at the facts.
The anti-offroaders worked hard to bring in the NERC Act 2006 and continue through the courts to make it bite. The CTC supported this. The NERC Act curtails the creation of routes for motors but does great things for he creation of bridleways and RBs for ‘us’. You can now create a bridleway by simply riding, unchallenged on a route for 12 years on your bike. Before NERC you could not.
Consider that legislation will only go one way for motors. Over 10 years places to go on a motorbike, on green lanes in the countryside, has only been tightened. In 10, or 20 years more it will get even less or even be banned altogether.
The last 10 years has been fantastic in the Yorkshire Dales and now that’s being repeated elsewhere.