I know this. A friend of mine used to be a professional competitive dancer. It was freaking insane. But I still think it was pretty stupid to be considered a "sport"..
Olympic diving is a sport. But sports that are subjective to what the judges think of your performance tick me off.
You are right. There are plenty of games that some consider a sport that are not sports. There is something that I disagree with you about though. If competitions that have judges were not sports, then that cancels out a lot of games as sports. Aerobatics, archery, arm wrestling, badminton, canoeing, cheerleading, cricket, dancing, diving, dodgeball, figure skating, fishing, martial arts, pickleball, pole vaulting, roller derby, skateboarding, skiing, snowboarding, surfing, swimming, water polo, and ultimate frisbee should no longer be sports according to you.