Well, the ancient mounds need to be covered with something, or they will blow and erode away. To me, 25,000 golf rounds at Moundbuilders along with a nice park, trails and viewing platform for non golfers probably does more to educate the population in general than closing the area and letting it cater to perhaps 5,000 annual visits of just non-golfers. BTW, those are my "guesstimate" numbers. I truly have no idea, except that Mike Hurdzan told me that not many non-golfers ever went to visit the mounds.
I wonder how many more people know about the mounds at Moundbuilders because there has been a golf course there for nearly a century than would have known if there were no golfers, sweaters with "MOUNDBUILDERS" embroidered on them, proud club members, neighbors, etc.
Interesting: Our work in Sweden has an ancient burial mound (different than Moundbuilders, yet still involves "mounds"). There are so many in Sweden that they are regularly farmed around and built around they simply become part of whatever needs to be built in that area. Different viewpoint.