Conor was pretty clearly drained after the Aldo world tour. The fact that he went and did TUF right after is insane, but he did it. He prides himself in being able to handle all those sort of obligations. But it's a lot for anyone. It's something I think a lot of people overlooked in the Mendes fight. Yeah, Mendes came in on short notice and that matters... but yeah, Mendes wasn't running around the world exhausting himself with media obligations for the past year, which also matters.
As for Ronda, she was clearly reaching her limit as well. That weigh-in freakout looked stressed induced if anything and she had already asked the UFC for a break before her fight with Holly.
I don't think it's fair to either of these fighters to pretend like that sort of thing doesn't take a toll on you. Answering the same questions, coming in with the same energy over and over and over again. It's probably easier to do this when questions revolve around you winning than you losing, but either way it has to feel like a massive burden for the top few competitors that do the heavy lifting.