Circling back around to the boxing is bad because some guys don't make it work in MMA I'd like to point out that no form is "bad" as its about the fighter. People with boxing heritage have done very well in the UFC and same goes for almost all forms. People say Taekwondo is a garbage form as well yet Anderson Silva comes from that background. I think that UFC like any other is a format and is not a way to judge any form as many techniques and moves are withheld for good reason.
Its a sport not a who's form is best simulator.