I agree to that to some extent, but not entirely.
A lot of suburban landscpe is becoming of limits to hunting, but there is no shortage of hunting land once you get 50 miles away from any metropolitan area. The major loss of hunting opportunities is limiting motor vehicle access to national forests- closing off ATV/snowmobile/logging trails makes it very difficult for sportsment to utilize much of the areas. On the other hand, I hunt public land of which there is no shortage of in my state. The biggest thing I have observed is that 99% (maybe even a greater percentage than that) won't hunt more than 200 yards from a road or logging trail where they have access to a vehicle. Despite the fact that we have 700,000+ deer hunters in the woods on opening weekend, I rarely see another hunter anywhere near where I hunt, though its because I hike in nearly a mile from the roads, I have a successful hunt nearly every year, though its a lot more work to get in and out of the woods.

I'd put the 2nd amendment rights way ahead of hunting access. The 2nd amendment is a delineation of a natural right (right and ability to defend one's self and property) while hunting access is simply a priviledge to hunt on land owned by the government. If you lose your rights to own a gun for self protection, you pretty much lose it forever. If you loose access to a prime piece of hunting land, there is nothing stopping you from buying your own piece of hunting paradise, or pooling money with friends to do the same.