I've been checking county by county in the areas where I work (mostly western Middle TN). This region is characterized by big sections of hardwood forest. And in this region, buck harvest numbers are WAY down this year. And the reason is the massive acorn crop. This is a trend I've followed for years. As LBLman said, most hunters hunt open areas and any type of ag field or food plot. In a bumper acorn crop, deer don't use open fields or food plots. Noy only do they stay in the woods, acorns digest very slowly hence deer do not have to feed as often. In big acorn years, deer do not have to move far to find food (sometimes never leaving thick cover) and don't have to move as often.
I keep track of what the acorn crop is like each year, giving it a rating of 0 to 10. In the years the acorn crop is an 8 or above, buck harvest numbers decline significantly in my area. And not surprisingly, we see a jump in photo census buck numbers the following year. In years when the acorn crop is a 3 or below, buck harvest spike because deer have to move farther and more often to find food, exposing them to hunters more frequently.