A bit of both in my opinion, I think people(myself included to a degree) wanted to see if Tony could bounce back from the beating he took from Gaethje and see if he can get 1 LAST shot at the Title, but in reality, his career went down the shitter the moment Gaethje snapped his head back with a brain rattling Jab.
ON the other hand, Charles is also REALLTY fucking good. 1 thing that can't be disputed is that Tony was not the same fighter, but Oliveria was always going to be better on the ground. The one thing I didn't see was him wrestling him and slamming him in the first round, but Do Bronx would have always had the better BJJ of the two even if Tony hadn't fought Gaethje.