Sorry to pull that quote out of context, but this is just peak HN. It's beautiful.
> Psychedelics have been available and used throughout history with few problems in ritual settings
So we should only allow them in ritual settings then?
> The real reason psychedelics were banned in the US is to have a reason to jail politically inconvenient people in Vietnam era and bunch of the world has followed the leader.
I actually agree with that point. However, I don't see how from any of this follows that you should simply allow them without any precautions or any restrictions. Alcohol, tobacco, even coffee is regulated.
As an analogy, we deem it useful that you can purchase a car and drive around with it. Nevertheless, we demand that you get a driver's license first, because there is enough evidence that driving is an often highly counterintuitive activity that can lead to serious damage unless you had proper training first. There is also evidence that you need certain prerequisites even with that training, which is the reason we e.g. wouldn't let a 10 year old drive at all.