This isn't to justify legalization (of Absinthe or other drugs/attitude execting chemicals) but just my perception.
I have a brewing encyclopedia from the middle of the 19th century and it had a recipe for absinthe. The brewing process was 2 years and I doubt that the novices that are home brewing are letting it go that long. Czech Republic and some other nations have commercial brand bottled Absinthe.
I seem to recall that the brewing book said that recipes vary and that several of the ingredients were supposed to be toxic. No mention was made of hallucinagenic properties (or dillusional visions). There was also a recipe for fermented milk (although I think that it is supposed to distill to a clear alcohol).
Brewing/fermentation is a simple technology. The technology has been lost and regained several times. Fermentation is part of the natural decay breakdown of fruits but it must be distilled in order to collect the concentrated essence for human consumption.