Denny Burkholder at CBS Sports thinks that Brock being Brock can only help the UFC:
Lesnar’s not the first major UFC competitor to act like a cocky jerk, and he won’t be the last. Remember Tito Ortiz? People hated him, too. And like Ortiz, something tells me Lesnar will be one of the UFC’s biggest pay-per-view draws, as people will be more than willing to plunk down $50 for the chance, however slim, to see someone beat him.
The big difference between Ortiz and Lesnar is that Ortiz was cocky in an extroverted way, because he’s a self-promoter who likes the attention. Lesnar is an introvert. He’s the most talked-about fighter in the UFC, but he just wants to be left alone. He’s an irritable guy. For God’s sake, he tried to walk out on the UFC 100 prefight press conference, and nobody had even said anything bad about him yet. Dana White had to tell him to sit down. This guy does not enjoy social gatherings, especially when he’s expected to participate and play nice.
Tito Ortiz wanted to command your attention; Lesnar just wants you to go away — especially if you don’t have anything nice to say about him.