Bollywood actually refers to the Hindi film industry and not the Indian film industry as a whole
We humans, the most intelligent beings to ever grace this planet, have quite a few beliefs that are actually incorrect. Earlier we used to believe that the Earth was flat until Pythagoras blew us out of the water. We also thought that trees were non-living beings but then Sir Jagadish Chandra Bose proved us wrong. Heck, some people still don't know that the टमाटर is actually a fruit!
Beliefs, whether they be correct या incorrect, are something that is intrinsically present in our lives, but before we take anything at face value, we should verify its legitimacy.