Its not that Luck will throw the ball, he actually CAN throw the ball too. I wouldn't be surprised if theres talk of Lamar being benched at some point next season. Lamar is a hell of an athlete but even Michael Vick was a somewhat decent passer. Lamar is just terrible. Once NFL defenses figure out hes a 1 trick pony and stack the box against him every game hes done.
I'm not against 18 games coupled with 2 less preseason games, because it would mean more meaningful football less preseason, while still not increasing the total amount of games played. What I am against is the 16 game cap per player. That would fundamentally change the game as we know it. It adds another layer of strategy that just complicates everything. Plus, no bigger roster since teams have to mandatorily not suit up more players than before.