Many of these facts are not even complicated things that require "arbitration". Trump has claimed in the past on Twitter that vaccines cause autism, promoted poisons as a cure for diseases, and that the country is being "invaded" by refugees. Propagation of such misinformation can lead to loss of lives and we end up blaming the same social media companies for not flagging factually incorrect content. Let me put it simply - Trump blatantly lies and there are bots that spread these lies on Twitter. No private company with any semblance of conscience and public responsibility would allow this to happen. Twitter doesn't have the gall to suspend his account. I'm happy they at least take a small step to point out these lies. Looking at how low a bar Americans have for their politicians shock me.