This movement is not about filling capsules with powdered ginger to treat something that it’s unable to. The goal is to synthesize molecules that have been studied and that we know work as a replacement for having to pay a doctor to get permission to buy them.
A parallel that comes to mind is "accredited investors". These are people that have chosen to opt out of the guardrails and been allowed to by fulfilling certain criteria. Maybe something like that would make sense for medicine.
I don't believe in the conspiracies you listed, but I absolutely believe there are plenty of conspiracies in plain sight (AMA restricting the number of doctors and fighting against single payer, the FDA being in bed with big pharma, etc).
We all should have the right to control our own bodies (which extends to recreational chemicals). For those compounds that are not yet vetted, we should have the right to make informed choices.