Ayush, it's a blockbuster science FICTION Hollywood movie, it never claimed to be scientific accurate. The response it got was not because of the details, but more because some of the "modern" or at least new interpretations of existing theories, that were used in the movie, such as the relation between time, space and gravity. Like time being a 4th coordinate in our 3 dimensional space, which allowed Cooper to move physically back in time inside that "cube" by the end of the movie. Which according to guys like Neil Degrasse Tyson and Dr. Michio Kaku is a "scientifically sound" THEORY. So i still fail to see how it's overrated since its the first movie i see that deals with that.