It wasn't always this easy to get psychedelics I'd say. Previously much of the LSD in America flowed from large labs (which were busted) and would get distributed throughout the country through scenes like jambands (eg: the Dead, Phish). Throw in a healthy amount of War on Drugs/D.A.R.E propaganda. Things dried up for a bit. These days however acquiring psychedelics can be as easy as a few clicks of a mouse and some crypto.

I also noticed the spike on the graph in 2019. That's when Pollan's "How to Change Your Mind: What the New Science of Psychedelics Teaches Us About Consciousness, Dying, Addiction, Depression, and Transcendence" book came out and it seems to have got quite popular. In this time the push for psychedelic-assisted therapy began in earnest.

I'd say psychedelics are becoming more popular these days because the old stigma about them is waning, mainstream acceptance is increasing, and supply is readily available. It's trivial to grow mushrooms or extract DMT.

I fully expect to see psychedelic-assisted therapy become an accepted form of treatment in my lifetime. Few things in America these days bring the left and right (AOC, Crenshaw, Gaetz, etc) together, but psychedelics are one that does. Psychedelics ain't just for hippies to melt into the music anymore.