I guess the most confusing or ambiguous part about the "not ready" aspect is that ROTR does run, just not reliably, however, there is no obvious pinpointing (from the guest pov) as to what fails. They just see it as the ride stopping and then they are evac'd.
It's almost as though it's so overly complicated and one act/part of the experience's dependence on the other to operate, results in the entire attraction failing. There is also no evidence that anything is improving, the only variable is just how quickly they recover from downtime. I'm not even convinced they understand at this point how to properly fix it or improve reliability. You can do very little in the 6 or less hours between closing and reopening.
I'm guessing they can just hope to hobble through the new year and then shut it down in January slow period for a full refurb to get it working.