I think the blue pill dogma has been around for some time, long before Hollywood. It has since been reinforced and solidified into the more extreme form we see today. It's basically a type of religion when you think about it. The concepts are not actually practical or based on reality. It's an ideology that looks good on paper and makes you feel good. It makes for one heck of a story. The princess is saved by the chivalrous knight, they find true love, and they all live happily ever after. You see a form of this story in pretty much.. everything.
The average guy reads about red pill ideas, otherwise known as reality, and immediately thinks, "These guys are just *******s, they're the bad guys." We're the bad guys in their own religion, and they will save the princess from us at any cost in order to ensure they get to live happily ever after.