"I’d argue that it has, because it pushed Rodgers to be better."

I think that did indeed give him some extra motivation.

But, don't forget the ML hire which also coincides with AR's improvement, especially in the 2nd and 3rd years when he won MVP's.

Last year he was hurt and playing with many new WR's so the drop off should not have been unexpected. He will be fully healed in September and now has some experience with the young WR's.