Ravers/psychedelic community: “it’s the drugs, music, and community, man!”
Clinicians for 50 years while people are suffering immensely: “no.”
Clinicians after 50 years: “okay, we’ll give you the drugs in our clean room.”
Maybe clinical settings are fine, and surely the way to find out is by doing rigorous science, but it’s very possible still that the medical community is wrong on this and thousands of years of communal drug/dance/music rituals were “more right.”
Maybe raves for a 65 year old is not appropriate, but it can be anything really: being out in nature, being with old friends, going to a concert, etc.
Personally I wouldn't take any psychedelic in a doctor's office. That to me would be awful.
Doctors (and other "normal people") are very conservative about drugs, mostly due to a history of toxic and racist politics and law around their use (except those that "normal people" deem acceptable such as alcohol and nicotine). I'd argue personal experimentation can be more useful to many individuals than strict clinical usage.