Gamblers fallacy-- your chances of acquiring a franchise QB do not, in fact, increase with every QB you take, as each pick is independent of the one prior. The answer is simply not "hey, let's draft as many Quarterbacks as we can, maybe one will stick." What IS the answer is solid scouting, and building a proper environment for a young QB to step into. Believe it or not, there are other positions that have to be addressed on an NFL team.. I do realize that the QB is the most important piece.
Pray tell, how was Carr's rookie season any better than EJ's? I will give you Bridgewater-- I was also of the opinion that the Bills should have traded up to take him but NOT because I felt that taking another QB would increase our chances of hitting. It's quite possible that Bridgewater could regress, or he could take the next step. Tough to say after one year.