They are !
I got there Monday for the private twilight prepared to camp because i registered for the next day. At about 4pm they said over the loud speaker that the next day was canceled.
I think they dont want bikes there and are trying to deter people. They have a new rule if not enough people pre register they just cancel the day . I kinda understand that but......now it makes people more afraid to sign up. So i plan to take off work and set up m schedule just for you to pull the plug at 4pm the day before? No thanks! Or i cant imaging people who traveled far to get there . Track is garbage so of course nobody signs up. There is always a risk of rain but other orgs/tracks sell out weeks in advanced because you could ride if you wanted. Even with full on wets nobody is riding Mid Ohio. I plan on have a full wet set up next year because i will ride in the rain if need be just not there .