As long as they keep giving shots to the loudest idiot, who is usually the most unqualified, then all of the champions will be champ for a very, very long time. Sonnen and Diaz have no chance in their upcoming fight. Sonnen will be finished within 3 rounds. GSP will make Diaz look like an amateur.
How is Diaz, a former world champion, the 'least qualified'? How is Chael Sonnen, who has beaten several top ranked MWs and is the only man to take Anderson Silva into deep waters, the 'least qualified'? I can think of several other persons at WW and LHW less qualified to fight the champions.
GSP has made everyone he's fought look like an amateur. And Jon Jones destroyed both Shogun and Lyoto Machinda in less than three rounds. That doesn't mean that the men they're fighting are 'unqualified'. I could see an argument for undeserving, but unqualified is just a dumb thing to say. The UFC wouldn't have signed off on these fights if Diaz and Sonnen were cans.