Who knows how much is factual. But I really liked the debate in The Founder about switching away from milk for the milkshakes. It really drives home how and why companies will go for shitty low cost options. Though the craziest thing to me is that after seeing it I checked reddit. And instead of being really turned off of fast food by the movie the thread was filled with people talking about how the movie made them hungry for mcdonalds. Half the point of the movie was the rapid decline of quality control for the food and it made them hungry for it.