I'm still confused by the argument that "people with undeserved title shots winning the title proves those people didn't deserve title shots".
It seems as though winning the world title by defeating the world champion in an MMA match would prove, if anything, that they deserved to be the champion.
First example: did matt serra deserve to be ww champ, even though he was more or less gifted a title shot (i.e. he earned it by winning TUF 4, but didn't earn it by beating top WW competition)? Of course. He TKO'd gsp. Case closed, he became the champ and deserved it.
In hindsight people can say he never deserved to be champ, for example because he never defended it and immediately lost it to the former champ. But that's not REALLY a statement on whether or not he deserved to be champ, it's just a reflection on his career as WW champ, which was non-existent.
Second Example: Did Brock not deserve to be champ after being gifted a shot for beating herring? Of course not. And in case the double negative is coming off as confusing: he absolutely deserved to be champ. Why? He mangled randy, mir, and choked out carwin. If he didn't deserve to be champ (i.e. isn't/wasn't good enough) he never would have beaten those people.
Third Example: Anderson Silva fights rich franklin for the title after only a single win in the ufc. No human being will tell you he didn't deserve that.
Common theme: Some fighters make such a splash in their weight division, either via external hype, notable performances, or talking themselves up (e.g. chael), and for that reason they get asked to fight against someone everyone can measure them against: The champion.
Finally, an example of an undeserved title shot: An undeserved title shot is someone on an n-fight losing skid n > 1 being given a title shot to rejuvenate their career (kind of like TUF 4, but this situation is more general and infinitely less likely)
A second example of an undeserved title shot: A high-name fighter threatening to retire if not given a title fight, and then being rewarded with one.
Middle ground example: Chael's title shot against Jones. Does Chael deserve it, from most people's point of view? Of course not. He has numerous losses at light heavyweight, he is coming off of an embarrassing loss to the original jon jones, anderson silva.
However, he certainly deserves it if you consider his known ability as a fighter, his ability to sell fights, the fact that jones himself wants to fight him... hence why the decision got made.
end of lecture