One factor that is usually ignored is that the THC content in marijuana today is stronger by a whole order of magnitude, 10-20X, than it was 30-40 years ago. This isn’t the Acapulco gold these twits grew up on.
Something of a myth. Mexican bulk weed wasn’t Acapulco Gold, by any stretch. Hash and hash oil were available, back in the day. California sinsemilla was pretty potent, but most people got stuck smoking the leaf, which was considerably less potent. Real Maui Wowie was a rare commodity, and probably a lot better than the current trademarked Maui Wowie grown in a warehouse in wherever anyone wants to grow it.