At the end of the day, ufc is a business. Just like boxing, promotions arr never going to go after a boxer that is good, but would not sell a ppv.
The ufc has to put on good and relevant events. A delicate balance. Something where they can legitimize as a sport by having the best, and at the same time, make sure there are exciting fights so they can sell airtime and ppvs. If every fighter were as good as fitch and okami, but also just as boring, then the ufc would start losing viewers. So they have a mix of top fighters and exciting fighters. If you are good and put on exciting fights, you're safe. If you arent a top fighter (ie gsp, silva, jones, cain, jds, etc) you need to be exciting. What is okami bringing to the ufc? Nothing. He will never hold a belt, not exciting, and is expensive. NO one is watching an event because okami is on it