So you are willing to discredit everyone's claim to the importance of their trips based on examples of people who falsely claim that their's was important?

I don't think anyone here is arguing the position that LSD will have a profound impact on anyone who takes it, just that it can give people a different way of looking at the world and sometimes that leads to novel and important insights.

Replace "LSD trip" with "university degree" in your example. Sure, there are many people who take a physics course and feel as though they have had profound insights but actually haven't. However, you can't use those examples to argue that everyone who claims their physics course has inspired their life and work is lying.