Never called for Khamzat to be cut (Actually maybe I did when he gave the middle finger to the fans after missing weight) but currently, my claim is that he just doesn't deserve a title shot. In terms of progression, Chimaev has a lot of potential going on for him, as for Costa? Well, he brings nothing to the table other than UFC drama and stupid Secret Juice videos, fightwise he also barely made it against a departing Rockhold. Costa belongs in the B-leagues and that is eventually to where he is going. His decline is obvious.
You thought this was just about Costa yaping? Nah Sherbro, it is about Costa being a horrible professional, a diva to get fights going, overall underskilled to be in the UFC and cringe af with the content he puts out. The content part must be a Cejudo entourage thing where they all compete on who is the cringiest..
All in all, Costa prime is already gone and we barely saw it and it shows in his constant ressurgent baldness.