I think people are just upset because UCF is acting like a big time program. Deciding not to celebrate their national championship is the small-timey thing to do.
My issue is that they are acting as if get had no control over not being in the CFP and that's ridiculous. Their non con consisted of FIU, Georgia Tech, Maine, and Maryland; the best team in that group, by far, was 5-6 Georgia Tech, a game they didn't even play. If Houston didn't gag last year they would have been in the CFP. I don't think this was the best or most deserving G5 team the last 15 years or so anyway. They also were absolutely hurt by the fact that they were 0-11 just two years ago, sucks but it's really hard for people to take a G5 team seriously that has a roster with half of the players that has a winless season.
To me this UCF season was great, but I'm having a hard time distinguishing this from KU's Orange Bowl season.