It is a garbage dump. And now, useless as a gravel pit. (you want that as your road bed?) If you don’t see that as a problem, then that’s why these sites will close. They’re being abused.
These places don’t take care of themselves. People have to be responsible with them.
The riding trails around the same area are maintained with much volunteer effort by the users. Brush is cut back, poop and garbage is removed from the trailhead.
Users of the shooting area would be wise to do the same. Adopt a gravel pit. Clean up the visible garbage, and you might be surprised that more people wouldn’t pack out their own. Right now, it looks like a lost cause, and people treat it that way.
The vast majority of BLM land is a garbage dump. That is why no one else wanted it.
That site is fine for shooting. Use it as such, and ignore it if you don’t want to shoot.
I don’t ride my horses on a shooting range, and most shooters don’t shoot out on riding trails.