Great article thanks for the link dy.
Most fans haven't yet caught up with the Packers' use of play packages referenced in the article - and the freedom McCarthy gives Rodgers to control (in no-huddle) and/or change the package based on pre-snap reads - making the conventional notion of "playcalling" obsolete.
There's an optimal play option on just about every play against whatever the defense shows if the team executes. Given Rodgers' Mensa-esque football IQ and freedom McCarthy has given him to use it, Rodgers has far more control over the plays that are run than McCarthy.
To say that McCarthy is a good or bad playcaller isn't relevant to the way the Packers operate - at least when Rodgers is on the field.
It does take the cat and mouse game to the next level though because at times I think defenses can show a specific look - and have a good idea about how the Packers are going to want to attack that look. I think this is more true when they want to run the ball. They'll run to the weakness of the defense consistently, and perhaps predictably, which is the right decision in theory but that tendency - to the extent it exists - can give the defense a quick step to overcoming it.