What the movie doesn't cover.

That there are a lot of normal, healthy, creative people into serious erotic role play that love pretending they are crippled or amputated and that done the "right way" this fantasy is hot and fun. They also didn't touch on that it's a part of a larger theme, sexual dominance and submission, also very hot for many people, it isn't "just" wheelchair or disability or brace fantasies that people have, it goes way deeper and is very complex and meaningful, as opposed to twisted and disturbed. Hollywood needs to make a film about people who are creative in bed because they are erotic and brilliant people, but no one seems to care about this or even know about it, it's sad really. There is much about this fantasy that's "good", fun and creative, if you know, you know, if you don't, you probably will let your ignorance and lack of creativity prejudge people that are far more creative and interesting than you.