I don't think it's anything to do with him losing his "skills". It's obviously due to the injury. I just thought it was an interesting article from a pessimistic Arsenal fan.
Whinging Pom. Clichy was easily the best left back in the EPL 18 months ago. It's just injury that has slowed him down, and caused his confidence to drop. I still don't thin he's right, but he has to play because we have no-one else. He'll be right once he's fully recovered.