You haven’t been watching him. Quick decisions, excellent pocket awareness and stays comfortable in the pocket. Doesn’t look to just take off, he even does that little step up and then reset back again that Romo used to do. It’s ok if you haven’t seen him at all other than the cowboys game, I have.
I never said he just takes off to run.
Shanahan schemes to get a specific receiving option open. That is often quick short passes mixed with running plays to eventually setup a intermediate to deep play.
The quick passes are obvious 1 read type plays.
The intermediate/long passes are designed around a specific target with all other routes designed to get the primary open. Purdy just has to wait until the primary reaches the area where he is expected to be open. If the primary is not open then he goes to the check down. If flushed by the pass rush he will look at other options as the receivers go onto scramble drill mode but he is not "reading" the defense at that point and he is normally just looking for the check down option when scrambling.
Romo often played scramble mode waiting for Dez to get open. It was impossible to design specific or complex routes for Dez because he is an all-time moron.
If Dez was the primary on an intermediate/long route, then that snap was basically scramble mode by design where Dez just ran around randomly and Romo had to play "where's waldo" to find him.
In later year's for Dez, they started just running him downfield on go routes by the sideline. That was the only route where he was somewhat predictable and it kept him from screwing up the routes of other receiving options (i.e. He was not bringing his cover man into Witten's area).
