Earlier quoted context omitted.
I'd argue they have no moral obligation to do any such thing. However, they should probably make a pretty clear warning sign. I fear we will digress too far. In short, I'm very pro freedom of expression. I'm glad voat exists, for example. The people there are often horrible, that is true. But, they still deserve to express themselves freely.
> But, they still deserve to express themselves freely. Um, why. What makes you think this. If someone's opinions are stupid and abhorrent, why should they not experience an immediate and firm response, in ban-hammer form. Why do you want to give ignorant idiots a platform to spread their ignorant idiocy to other ignorant idiots (and e.g. provoke easily influenced mentally ill idiots who might want to drive cars into…
Because the only way I can guarantee that "my side" can say whatever it wants, is to guarantee that all sides can say whatever they want.
We have, over many millennia reached a point where tolerance is considered a pretty high virtue - we believe that even if we don't agree with someone, we can live and work side-by-side with them. This is one of the reasons we have stopped trying to kill each other for believing in the wrong religion. This is a good thing.
Note: my first sentence is taken from this clip of the West Wing: https://youtu.be/jmhC9e39aP0?t=181 .