To the OP.
I see and hear the consequences time after time. Trail conditions do make a difference when and where people ride. It has been a factor for some areas with extremely reduced traffic being the result.
Simple example from a single trail last week. I was on a long section that had not been "refreshed" by grooming in quite some time. Lots of new snow too. I started to see turn around tracks in the last miles of that section.(Dozens of sleds recently) It was a giveaway that the next section was groomed. Riders had just given up and turned around when they hit the rough. It doesn't take too many experiences like that for riders to give up on an area.
I give the clubs credit. I know it is dang hard to get trails, keep trails, maintain equipment, and then groom when the season hits. This year also added the challenges posed by all the flooding. It is not easy. I appreciate all the work. I understand the challenges. I know that many riders do not. I also understand how riders can be a bit grumpy. Many plan out the trips with friends and family weeks in advance. I also see the range of riding equipment and skill sets on the trails. Good trail conditions can make a big difference in the experience.
Good grooming does make a difference. I see areas that have lagged over the years. Their traffic is down. Conditions might not send a group home during the trip. It will affect their decisions on the next trip.