I can agree that it's not a problem of mental health in the sense of diagnosable conditions like major depression, schizophrenia, etc.

But it is linked to the inability of people to achieve positive life outcomes - i.e., healthy friendships and intimate relationships, satisfying and well-paying jobs, and a sense of community engagement.

This kind of deep hatred only develops after you've spent enough of your life absent of acceptance and love.

There currently isn't an obvious path to a better life for people in this situation.