Carlisle has a point.
He's been robbed of his rather reasonable rise as a key defender because Hurley, despite being an abject failure as a forward, is some sort of protected species down at Bomber land. As a result, Carlisle has to make way for someone who is one of the weakest links in the team because he couldn't do anything useful where he was deployed. Carlisle was in AA contention until he lost the plot against Franklin last year, but he was still quite reasonable back there.
I'd be pissed, too, having your career killed because of a useless protected species in the team.