Also you could make this claim about literally any person in any situation. Not all people are worth listening just because what they have to say is "unique". People who think vaccines are being used to implant microchips have quite the "unique" and creative perspective. That doesn't mean they deserve to be taken seriously.
As someone who smoked a joint with Terence, I can tell you why people dismiss him. He went totally over the edge with the "Timewave Zero" software nonsense. Aside from that, he was surprisingly pretty grounded.
Edit: I've enjoyed listening to many hours of Terence McKenna speaking, but I wouldn't recommend swallowing all of his pills.
Why is there no popular Taoist movement? Why was it marginalized in the hippie movement? Why did intellectuals allow the hippies to control the perception of Taoism?
Chuang Tzu is just so fundamental. I can't see how you can go wrong adding it to a standard Western education.
YOUR LIFE HAS A LIMIT but knowledge has none. If you use what is limited to pursue what has no limit, you will be in danger. If you understand this and still strive for knowledge, you will be in danger for certain! If you do good, stay away from fame. If you do evil, stay away from punishments. Follow the middle; go by what is constant, and you can stay in one piece, keep yourself alive, look after your parents, and live out your years.I thought all of that movement has been more or less mainstreamed over the past forty years.
This isn’t exactly Crowley’s England.
Everywhere I look cannabis use has virtually normalized outside of outdated and contrived legal frameworks, and 1%er business tycoons are micro-dosing on the job for presumed spiritual and/or perceptual advantages.
I'm not sure how that counts as marginalized.