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.
The riding trails aren’t near the gravel pit, you’re missing the point. The point was an example of good stewardship by the users of those areas, to keep them nice.
I obviously like to shoot. We don’t have the right to treat public lands as a garbage dump.