If this were last week I might agree with you. I thought in the Bulldogs game he looked lethargic and dis-interested, evident mainly due to his very slow play the balls after kick returns and poor positioning at the back that even Kris Keating found plenty of grass.
It's not making excuses by simply pointing out that one player can only do so much if if the rest of the squad isn't performing to expectations. He's still far away our best player, but the fact is he's not going to become more consistent until the rest of the squad lift their game. For the past few years he's been picking up the slack because other players have been under-performing.
You can't compare Thurston and Hayne, because it's Thurston's role to be chief playmaker and touch the ball every second play, call the shots, and tell the forwards wear to run, and generally organize the attack. If he's not vocal yelling at his troops all the time he's not doing his job. In regards to Hayne's leadership, he lost his way the other night but it's a learning curve for him being captain and talking to the refs so should be given some leeway there.