Modern Warfare 2 pushed me into slaughtering an airport of innocent people. Digitally.
I'm not sure where I said anything to suggest that, but it's a very interesting choice for a strawman. Not even going to bother with a more recent reference?
Okay.
How about: a lot of people in modern society have a horrible understanding of what constitutes consent.
There have been studies that show that as long as you don't use the word "rape," a lot of college-aged men admit that they would do things that negate or avoid a woman's consent. A disturbing number of people don't seem to realize that you cannot knowingly give consent when completely intoxicated.
Consent is something a lot of people don't have a firm handle on in the real world. The fact that shooting innocent civilians in an airport is bad is something most people can agree on. That's what separates reality from fiction in your example. We know it's "bad." The fictional world and our own desires do not align in any tangible way, and so obviously it does not modify or reinforce anything.
But if fiction is in agreement with our own ideals and our understanding of the world, it creates a form of positive reinforcement that reasserts the already present positive associations. If you already think that a woman enjoying sex at all means she should enjoy it on your terms, then the fact that a major motion picture says this as well is a bigger problem than most people's non-existent desire to attack an airport alongside Russian terrorists.
Like I said: 50 Shades of Grey doesn't make someone not understand consent. Obviously.
But the fact that it exists in the way that it does is one more part of the very large problem, and further proof that a problem does exist. I doubt EL James set out to write a series of books in which a woman says "no" repeatedly and is told "I know you want it anyway," but that's exactly what she wrote and sold as a romantic ideal.