He was horrific in Dallas, then went to Chargers and burnt their Offense to the ground, caused Their RB to leave and their head Coach to get fired. He isn’t doing anything special in Philly, he simply is managing a good roster with Barkley having a crazy year.
If by horrific you mean he had the number one over all offense while he was there, yes he was horrific. He was literally the leader of the 32nd worst offense at least.
Brandon Staley was well on his way out the door before they hired Kellen Moore. Hiring Moore was his Hail Mary similar to how Kubiak was to Allen.
Now he’s just managing a talented roster. Ever witnessed a coach mismanage good players? Give credit where credit is due. You sound like a hater.