The the Saints offensive line has sidelined 4 to 5 starting Saints QBs in the last 4yrs.

This is somewhat true. The playcalling/run game was so much better when he was here though. Also i dont recall many games of him not having a clean pocket to step up into. I dont know if he would have made this oline look good. There are like 3 guys in the backfield half the time. No preparation can beat that.
Even Drew could only do so much. Remember he got his lung collapsed in 2020. And our playoff exits in 2018 and 19 featured our OL getting beat pretty bad.