None of this is remotely true.
If you do go to MIT, you will find that you are competing against the image you have in your head of how well you should be able to master the material. Others will help you, you will not be left to fall behind. Your competition will be versus your own standards you set for yourself (which may be very stringent).
The picture painted by @rdeng2614 is truly grim and depicting of self-centered students. Why would anyone willingly go to a school like the one in his description?