Cesc doesn't get all the blame for leaving us when he did, our ambitions had faltered.
Thing is, Cesc's career decisions were low concept. Barca never needed him, and even now their fans barely seem to remember him. At Conte's Chelsea he was the one intelligent toe-bone in a lobotomised and corrupt body, and their fans also don't care about him.
Cesc's relationship with Arsenal was more obviously a relationship with Wenger. I get that, because Wenger had that paternal importance to many players. And I'm still fond of the guy, but I don't think he knew then or knows now how he used to instantly judge those defence-splitting passes, and he can't teach it.
His Scott Parker-tier managerial work at Como is not a calling card. The Premier League eats coaches like him for breakfast these days. He wouldn't last six months at Fulham, never mind Arsenal.