It's weird that you would state that so confidently when, as wikipedia says, "Hoffer's ideas about megavitamin therapy to treat mental illness are not accepted by the medical community." It didn't pan out.
Didn't pan out because it's not the plan to pan out. The plan is to make people think there's something wrong with them and recycle them with insurance.
It didn't pan out because attempts to replicate it didn't work. He seems like another LSD abuser who thinks every idea they have is good or maybe a grifter who wanted to maintain interest in fruitless theories.