why would anyone not blitz? It seems to just cause so so many issues with the QB. Sure there’s risk, but man it seems like keeping things unpredictable and chaotic for the QB should be priority 1. And that includes btw, occasionally dropping 8 and forcing the QB into tight windows. Just keep it variable is the point.
(Exceptions would be Mahomes, Josh Allen, Stafford who have far higher QBR, Rating, completion % when someone blitzes).
But there aren’t many of those guys walking around college campuses