Who are the service providers of the treatment and what training have they taken to do so? There is some available through folks who did original research (eg: John Hopkins) and now do talk and demo circuits but otherwise it's all largely undefined.
I'm paranoid of what this might lead to without strong community standards and ethics. A good first step, but lets hope it doesn't ruin it for others.
It's undefined because it's just getting started. You can't make a substance legal and have all the necessary training and infrastructure available from day 1.
So previously they were illegal and you bought dried mushrooms from some guy in a pool hall (maybe I'm dating myself). Its hard to imagine that legalizing them is a step back. People automatically see legalization as an excuse for more bureaucracy and regulation - how about starting with the premise that the world didnt end while people bought it illegally, and ease in a minimal way to ensure safety and quality, which must be well understood for all the other foods and natural products already sold, instead of doing the regulatory power grab of "oh we need a whole new framework!"
Permits licensed service providers to administer psilocybin-producing mushroom and fungi products to individuals 21 years of age or older.