He said before the race, he's racing on his TdF training base, essentially meaning that if the condition comes back, it's the shorter end that recovers more quickly.
And yes, he's always gravitated to fresher efforts.
I also wonder how bad he truly was on Hazallanas, cause it could also be that he just didn't feel great, and noped out of attacking but he wasn't so bad he was actually close to dropping or anything. I think that fits quite well with how Roglic has often raced in the past, especially with how he was sitting on O'Connors wheel in the first half of the group instead of back of the group. And with it having a long descent it was kinda pointless to do any attacking after you don't follow Mas.