This is an appeal to emotion and precludes that the aim of a countering narrative is a change of heart in the individual in question. Instead, sensible ideas raised to the public consciousness that hold up to scrutiny will outweigh and supersede those that cannot.
Censoring things like hate speech drives those who hold such views into echo chambers where they are validated and never subjected to any criticism or analysis. It’s here where those ideas may become dangerous. Allowing hate speech into the open air allows the public to see it for what it is and soundly reject it while dismantling it in the process. In short, give hateful ideas the rope and they will hang themselves.
Insulating people from speech they find disagreeable or hateful robs everyone of constructive debate. This is part of the reason for the civil unrest and turmoil in modern society; hate speech is a catch-all term being assigned to anything that breaks the social justice mold.