Quora really is a waste of time and symbolic of all the negative things about the internet today and the way the net has disintegrated as useful tool for information. Quite simply if Quora disagrees with what you put it removes it regardless of supporting evidence. One can only conclude that the site exists to push a fixed political viewpoint rather than be tool for leaning or discussion. It hides behind the " Hate speech " excuse to remove anything or anybody at anytime.
Give it a miss if you have any intention of using the net for education.