My understanding is that the NFL stance is that it's the team's job to enforce the rules, and that they only get involved when a said team breaks said rules. (Or maybe they only focus on the positive tests).
In other words, if the media didn't point this out, no one would of done anything all season, but now that the media pointed it out... they're going to investigate the team (not the players, but if the team is enforcing the rules on said players).
And at minimum, they didn't seem to be enforcing the mask mandate with Rodgers for interviews. (Assuming they haven't been punishing him).
Though how many people get access to the players medical records? Or knew that the NFL declined to count Rodgers form of medical (whatever he did)?
In theory if everything but Rodgers is correct, they might just be told to fix it for the future. In there are more issues, the Packers could be in deep trouble.