Great, I would like to see people deplatformed for advocating illegal immigration and racism against white people. Such people are rampant on social media, yet

Great, I would like to see people deplatformed for advocating illegal immigration and racism against white people. Such people are rampant on social media, yet I doubt many of the same people eager to get Moleyneux deplatformed would be as passionate about deplatforming those offenders. The point is that if we are willing to accept arbitrary deplatforming - which is necessarily the case if we accept deplatforming at all - then speech can be arbitrarily stifled by a few executives, or a few angry mobs. This is intolerable. Your analogy to the bartender is not appropriate, because we are talking about platforms which explicitly facilitate speech and outreach to millions. Presence in a bar is quite different.