Oh, I think a rematch is interesting. Hell, I don't even think Colby automatically loses. I just hate that people use that as logic for setting up a rematch when Colby hasn't done shit to deserve it.
-Performance in a first fight doesn't matter. No one should have been clamoring for Weidman to rematch Luke immediately just cuz he did well before he threw that spin kick.
-Potential doesn't matter. A guy who deserves his shot that he'll definitely lose should still get the shot and lose. Whereas a guy who COULD win shouldn't get a shot just cuz of that, they need to actually get the wins. Khaos Williams could knock out Usman, and is a hell of a matchup between power, but everyone and their dog would go "Why the fuck is Khaos Williams fighting for the title?"
Again, I'm not saying Colby will definitely lose, and agree merit wise, which should be the most important factor (but isn't), he needs to do more. And although a knockout doesn't mean a fight wasn't good, it absolutely does mean it shouldn't be run back for a while. That while is dependent on what changed or has been accomplished in the meantime. In this meantime? Very little has been changed or accomplished.
And also, being good is not reason to run it back either. First Wonderboy-Woodley fight was good, second one shat the bed. Ngannou-Lewis was awful, doesn't mean they shouldn't rematch. My issue isn't that people's opinions about Colby in the first fight were wrong, it's that people are using those opinions to justify this rematch, which is something that has no precedent in reason, either from an idealistic or realistic standpoint.