I think it's a lot because many of his ideas that were revolutionary for the time are considered obvious in hindsight. Mental illness at the time was often cons

I think it's a lot because many of his ideas that were revolutionary for the time are considered obvious in hindsight. Mental illness at the time was often considered to be the result of some moral failing, and those with it are degenerates and beyond help. Freud and other founding members of psychology presented a radical idea that mental illness is a disease, its sufferers should be treated with kindness and compassion, and it can be treated by talking.