That could be down to the fact that homeopathic treatments have largely been legal. The studies have been done and showed that a lot of it doesn't work so it isn't offered in traditional medicine. There were a lot of promising studies into the effects of LSD and Psilocybin before they were made illegal. Now with the loosening of restrictions we are able to get more research into the potential uses of psychedelics and there have been a lot of positive results. The research into MDMA for PTSD is really exciting, as well as Ketamine, LSD, and Psilocybin for different forms of depression for example.

They will never be a solution for every problem like some people evangelize but where they work, they give people with these conditions another avenue to try when other "legal" drugs have failed.