The same point could have been made with a completely different tone. You cannot have meaty discussion amongst people with diverse points of view from diverse

The same point could have been made with a completely different tone. You cannot have meaty discussion amongst people with diverse points of view from diverse backgrounds without an expectation of civility and respect. If that isn't enforced, then minority viewpoints have no hope of being taken seriously. It becomes an echo chamber and the oxygen gets sucked out of the community. This can also drive away your most valued contributors and/or make their contributions toxic in a way they can't stop. There is all kinds of problems with saying that it is okay to express a valid point in a nasty fashion.