I don’t see it as much different than the general societal norms that we tend to teach children, like “try to be nice” and “it’s okay to avoid people who aren’t nice.” Is that a violation of freedom of speech, or some top-down regulation? I don’t think so.

It probably shouldn’t be “licensing” in the sense of using state or otherwise organized violence to seek out people who violate the norms. We generally don’t teach people to punch anyone in the face who is rude. But having general standards of conduct don’t seem to bad to me.