Brady and Brees do it.
Rodgers does some, Matt Ryan does some.
There was a whole generation around just bedore the time of Unitas where most QBs were the playcallers.
Those guys call audibles, not the same as what Peyton did/does.
And you are right about the old days...when you ran 45 times a game, and relied on D. Not to mention only having to score 11 to win every game.
It's not the same.