That’s my understanding too. I went on a course walk Friday then was with the horses and riders at the end of the course all day Saturday.
The horses all seemed in fine condition, but the course was tricky. I don’t think anyone thought it was unfair, just difficult. Terrain was used to the max by moving some straightforward jumps ever so slightly. The combinations required a lot of precise riding. The sun was super bright. The only real complaints I heard were with some of the super tight corners.
But this is just my perception as a layperson who has never and will never tackle a 5 star course.