Accountability? Yes, accountability is good. It’s proper and necessary to address harmful actions and ensure steps are taken to prevent recurrence. This is entirely possible, and likely more effective, without resorting to insult.
Insults are just punitive justice in a social context: a counterproductive way to discharge outrage rather than foster change. It is to temporarily soothe the egoic zealot lurking within the hearts of all. The research is clear: whether in criminal justice or interpersonal conflict, rehabilitative approaches (clear boundaries, restorative dialogue, support) reduce harm more effectively than punishment alone.
To believe that hate may be remedied with further hate is to mistake fire for water.