Sigmund Freud was a 19th century doctor. The modern medical field is not comparable to the one 150 years ago when the treatment of most things was "go breathe near the ocean for a bit".
Also, no serious 21st century psychologist or psychiatrist would consider Freud's theories to have any validity other than for interpreting Shakespeare plays. Freud's psychodynamic psychology has been long eclipsed by behavioral, cognitive, and evolutionary subfields that have much stronger experimental standards than Freud had (most of his hypotheses came from case sudies of a handful of his patients).
Um I have a family friend who is a practicing psychoanalyst. They are still eligible for license in all States and remain a popular form of psychotherapy. So don't be so sure the field has moved past Freud. They still think his theories are valid enough to use on people.
According to Wikipedia, it has evolved since Freud, so it may not be valid to say it hasn't moved past Freud. On the other hand, I'm sure homeopathy has changed in that time as well.
tbh, going to take a nice couple of breaths next to the ocean sounds like it would do me a lot of good at the moment.
For relaxation absolutely - for polio, not as great.