The way I see it is, yes refs blow calls each week, there were a few in this game. With the way roughing the passer has been called this year, there is no way the ref should have missed that call. The good news is the team did not lose its composure and was able to finish the game.
I saw an article that said the Rams are planning to propose roughing the passer being able to be challenged. It would be nice to also be able to challenge missed calls. Of course if the refs treat it the same way they did passing interference any rule change would be pointless anyway.