MMA fans are the worst, they tend to only like undefeated fighters or champs, and flavors of the month...but in their defense, it's one of the hardest sports to be a true fan of.
Most popular sports are team based, and if the team gets crushed or sucks season after season, they can blame certain players or coaches and say, well next season may be better when i am rooting for different people with the same team name.
In MMA, if one of your favorite fight starts slipping you have to literally watch them get beat down with little to no way to deflect the disappointment.
That's why soon as a fighter goes through a little bad luck, everyone jumps off the bandwagon. The same people will jump right back on if the fighter starts to win again.
It was great being a Wandy, Shogun, Fedor, BJ, Mach fan for a long time.... Then they started to lose and it was super hard to watch. This is what separated the fans from the bandwagon riders.