Mental health is fundamental, even more so than physical health in many cases. You can have a great body, but if your mind is in bad shape, there are thousands of people with good lives, physical health, etc., committing suicide because their mental health was on the rocks. Now, that doesn't make words physical violence. Hurting isn't the same as hitting. If we treat every opinion as violence, we end up limiting freedom of expression, which is what allows us to discuss, grow, and overcome harmful ideas instead of hiding them.