Who gets to define what is “reasonable”?
The US concept of freedom of speech is wider, stopping only short of actual libel. The ideal here is that someone speaking foolishness or lies will be revealed as such by someone else’s criticism. The problem is that today people are lazy and rely on an oligarchy of sources and such criticism is seldom heard.
My preference would be: customary tort law. All I am advocating is removal of special protection of free speech from agitators and pornographers.
Insults are the antithesis of free speech.