I don't think Dana criticizes boxing, as a sport; as much as he does the way that its being run as a business.
"...People make it like I'm this guy who is trying to destroy boxing. Boxing is destroying itself....it has nothing to do with me. The fact that the biggest fight [Mayweather-Pacquiao] that can be made isn't happening, shows you where boxing is and what they're doing. I love the sport and I'm not trying to bash it." - Dana White