For example, I'll use Karate Kid. I know many people are joking, but it irritates me when they say that Daniel was actually the villain because it literally ignores all the messed up things that Johnny and his friends do to Daniel. However, I'll focus on the more blatant theory that is objectively false rather than open to interpretation: that Daniel's kick to Johnny's face was illegal.
This is patently untrue, as said by Ali herself right before the tournament begins. Her words:
"Everything above your waist is a point. You can hit the head, sternum, kidneys, ribs. Got it?"
Now, it doesn't specifically say face but the fact is part of the head and unless otherwise instructed by the films, the head includes the face.
What are some other bad theories out there?