I hate Ryan Pace for forcing us into rationalizing Andy Dalton into a good QB, much like we did for Foles last season.
Phil never really goes on to say Andy Dalton is awesome or will be awesome with the Bears. What I gather though is that Phil likes him as a guy who can run the offense that Nagy wants to run as evidenced by Phil continually saying that "this is a play/concept that Matt Nagy loves and look at him execute the play."
When I watched the TTNL breakdown of Dalton, all that kept coming to me was that Nagy wants a guy to execute his offense the way the offense is designed to be. That means quick, accurate reads of the defense and then onto what's happening in the play to get the ball out quickly into the hands of the playmakers. We all know Trubisky struggled with reads, struggled with reading defenses and thus struggled with accuracy. It looks like Phil thinks Dalton has the ability to process what's happening pre and post-snap and then has the fundamentals and ability to deliver the ball where it needs to go.
It lines up with what I'm expecting Dalton to be: a solid QB who can execute the offense and take what the defense gives you. There's still going to be plenty on the defense to keep the score close because Dalton isn't going to be a guy you're looking to win games for you with his big arm and/or play making ability.