Unfortunately there’s even less research on those than on the original.
I’m not sure if the difference between weed and psychedelics in the habit area is enough to affect the formation of a reform movement.
Anecdotally, I saw a lot of friends get cranky when their weed supply was briefly interrupted by covid-19. The public reaction was strong enough that dispensaries got to reopen almost immediately.
I pretty much always have some lsd around, but the urge to use it frequently is not there. I usually go months without tripping, not days.
I'm not talking about genuinely nefarious reasons, where yes, people would have no problem going to a dealer, but about simple idiots who get a bit too drunk/high/stupid and decide it would be a good prank to dunk a bit of LSD in their friend's coffee before a big meeting or something.
I've been on the receiving end of a person who's absolutely wasted deciding I had some catching up to do and mixing all my drinks double (always mix your own drinks people!) and I'd rather not imagine what the same thing happening with LSD would feel like. I've already seen something similar with weed, where the new guy got the way stronger stuff, and few people saw why that might be kind of fucked up because "it's basically legal now, it's fine!".
This also makes it safer if people start having bad trips, to help them calm down and prevent them from endangering themselves. Another spin on this is therapeutic/spiritual services, like LSD-assisted rehab clinics or churches that use it as a sacrament. It could all be done with the same license and certification.
While their reputation as hedonistic orgies of sex and drug use is overblown, burns are certainly friendly to psychedelic use. Aside from the fact that you're around lots of stuff to explore, there are also spaces that are set aside from any loud music or overwhelming stimulus.
Also, while I can't speak for any other events, the burns I've been to always have an area called "Sanctuary" that's run by volunteers and provides a quiet, relaxing place for people experiencing anything from anxiety/exhaustion to those having a trip that might be a bit too intense. They have people who are trained/experienced in calming people down, cold water, snacks, etc. so you've got a safe spot to relax if you find yourself in an uncomfortable headspace. I'd imagine they probably stock some emergency benzos as well but I have no idea if they actually do. Just seems like the go-to treatment for trip-related anxiety or panic attacks.