Then you weren’t paying attention. Look up any of the old press coverage on Byron Leftwich, his bad mechanics got discussed a lot (he’s got a bigger wind up than half the starting pitchers in MLB). There’s lots of discussion on Peyton and Brady’s good mechanics. QBs only have a handful of things that get discussed, their ability to read defenses and their mechanics are the big 2. Been that way as long as I’ve been watching football.
Byron Leftwich - least athletic and slowest black NFL player ever.
Bernie Kosar's mechanics were talked about from the day he entered the league until the day he left.
But Bernie adjusted much of his game to fit the NFL & knew how to read a defense as well as anyone playing.