they sat b/c there were better options than playing them as rookies.....signifantly better options. That's what it always comes down to. Matt Ryan would have sat if he was in there spots as well.
I agree we don't have much better options but maybe that is something we should have considered when we were making our offseason signings. It's not like there were not good or serviceable QB's to be had.
I was screaming all offseason(although not on here) for us to sign a good veteran QB for Cam to learn from and sit behind.