DFW is obviously getting the message that MMA fans and fighters are not too happy about this move, but we all know this is being done for one reason alone... to try and garner more revenue by bringing entertainment wrestling fans to the UFC.
There's no way that CM Punk gets an established MMA fighter as his first opponent... he'll probably fight a newly signed fighter for his first fight so he gets a win, and it's likely that his first few fight will be against similar opponents so his his fans that follow him over don't lose interest in MMA.
it really does mock the sport a bit, as well as short change he fighters who had to work their way up the ranks to make it into the UFC.