Well look at the Rams. If you were to start a backup QB who is a lefty, Havenstein would face the best rusher more often and it wouldn't end well for the backup. Because Hav is more of a throwback type RT who is better in the run game. I wouldn't want him watching my blindside. McClendon either.I always pull for lefty players since I’m one myself but I’m not sure protections are that much different anymore since teams are always going to target the weakest link. A new QB period changes protections to a certain extent. The Falcons now have to protect better because they now have an older pocket passer.
Teams definitely have more prioritization of pass pro with the off side OTs nowadays. But the fact is your best pass pro OTs are on the blindside for your QB. And the guys with the great feet are so hard to find there's some teams who don't even have one of them.
It's funny how I never really thought about that effect. But I've been looking at Cole Payton as our "stick him behind Stafford" QB project. And starting to realize the impact of that type of thing on our OTs down the road.