The thing that gets me about this argument is that, not only is this not a hypothetical scenario, there's a rather large overlap between the people who've been

The thing that gets me about this argument is that, not only is this not a hypothetical scenario, there's a rather large overlap between the people who've been using these tactics to shut people up and the people demanding that sites like Facebook clamp down on "harmful" speech. They're like two parallel tactics in the same war to silence undesirable views. If we give in to the demands for sites like Facebook to eradicate harmful speech, we'll still have the same campaigns to fire and harass people, they just won't be able to complain about it because the social media websites will be under the exact same pressure to shut them up as their employers.