Or perhaps more importantly, surveyed the unfortunately scant literature to understand how they work as well as any potential for harm.

Regardless, you MIGHT get some non-mainstream academic agreement that there is the potential for therapeutic benefits; but not "Enlightenment" or anything spiritual.

Although, it seems to me that the burden of providing such literature is on you, not OP (no, erowid.com doesn't count).

erowid is a fine source for experiential reports and technical information on the botany and/or pharmacology of the substances involved.

let me ask you a question: is nothing true unless a credentialed academic writes a peer reviewed journal published paper about it?