If they didn't play old Chiodos songs, no one would've showed up to the shows. Craig probably feels like if he didn't write it he shouldn't perform it. And the album wasn't that well received by fans even though I loved it, I'd kill to see 'Modern Wolf Hair' live again though.
Wasn't well received? People went as far as saying it was the best Chiodos album. When they toured with Brandon, the outcome surpassed my expectation. I went to one of those shows not expecting to hear a lot of old material (i was actually hoping they'd play more from Illuminaudio) I think its more of a ego thing for Craig. I don't think he wants to give credit where its due to Brandon for helping Chiodos make a stellar album