It's not hate. There's a place for bad guys and in a way, we enjoy hating those types.
Colby is a great fighter, but an abysmal actor. Just incapable of selling it properly.
In a way I don't blame him for trying to save his spot in the UFC by any means necessary when he fought Maia, knowing they wanted to cut him win or lose.
But still, his act is borderline autistic. And viewers roll our eyes accordingly. The dude can fucking fight, but that's about it really. Wish he'd drop the act, admit he tried something out and it didn't take.