Even though he probably can do all that, it isn't the reason he wasn't at the press conference and didn't put the belt on Ngannou. Because all other events he does that unless there is some kind of issue going on. Ngannou stood his ground and gambled on his career and he ended up winning. So Ngannou has all the leverage now and it most likely pissed off Dana. He wants to discuss the issues privately and not put anymore attention to it in the media. So in a way it's smart that Dana didn't do the press conference because he knows the questions would be asked about Ngannou's future and he doesn't have the answers for that. He should've still put the belt on him though and kept it professional. Deal with the negotiation issues later.
Also he isn't bummed out about the Moreno and Fig fight because he knows it opens it up for one more fight for them since they are even. I really wouldn't be surprised with another instant rematch for the final fight between them.