He has one point I do agree though... Psychedelics should not be banned and get proper study for everything related to mental issues.
There's a lot we don't know and there are a lot of studies world wide who do agree that psychedelics in controlled environment can elevated some symptoms; fear of death for terminal ill persons, hard drugs addiction, anxiety, depression... among others.
But hey, just take your SSRI from big pharma which most of the time does worst than help ! (Personal experience).
That's nice !!
Yeah that's mostly my experience :) It's somehow "freeing" your mental constructions and you're just there in the present moment !
However don't fall into the trap of doing it every time while hiking and being in the fresh air !