I am not sure if that is true anymore, with the implementation of anti-discrimination laws.
I mean practically it is still the internet, but if your service is public and beyond a certain size, someone might indeed sue you for doing that.
Edit: I submitted a separate Ask HN on "shadow suppression": https://news.ycombinator.com/item?id=28344492
Being out of Facebook's decisions on what you may say is as simple as closing your account.
If people can make sound independent judgment, we don't need a law constraining what private companies must allow on their services because private users will find the censorship reprehensible and will voluntarily leave. We need the First Amendment to constrain what government can do because people cannot voluntarily leave a government; the same is not true for their Facebook account.
And if people cannot make sound independent judgment, and their desire to fit in will make them give up all sorts of rights... How can we trust them with the freedom to say and hear unfiltered information? The first demagogue who comes along and convinces them they must do what he says or they don't fit in will have the whole user base in their power, right? In such a context, it is perhaps necessary to allow the media its freedom of the press to transmit what is true and refrain from transmitting what is false.
Just because you and are I reasonable doesn't mean the overarching internet is. It's manifestly not. It's extremely likely that a large part of the signal that makes this community valuable would depart if it was entirely filled with 10x as much noise.
Let people make their own communities with different standards if they don't like this one.
What does this say about those participants who do leave? The entire point of different opinions is different points of view on the same subject. Those leaving simply because they don’t like the general narrative do no abide by this principle and probably shouldn’t have been in the community in the first place. Those leaving because they experienced daily abuse, that’s reasonable. I still don’t think they should leave, but instead grow thicker skin.
