Free speech vs harmful speech
So, it's fine and dandy to psychologically torture vulnerable targets with threats and intimidation and that shouldn't be controlled. It's their own fault because they should just... what? Toughen up? You don't understand psychology and you don't understand humans. Typical of an ideological absolutist stuck in their favourite meme.
Look, if you're going to consider legally controlling anything, you look at intention and effect. So, for example, if the intention of a man who regularly calls a young woman living alone and threatens to come to her apartment and torture her to death is to destroy her mental health and cause her suffering, and the result is her mental health is damaged and she suffers, why would we not legally protect the victim? What advantage would occrue to society in not allowing the law to step in in extreme cases? The point here is that your hand waving cannot make the reality that speech can seriously harm and is often intended to seriously harm go away. You need to deal with that and then justify why these cases—where the level of malicious intent and potential harm is high—do not merit attention by the law when even minor physical assaults that cause no lasting harm do. You haven't done that and so as yet you have no case.