Anything with the phrase (paraphrasing) "but I must warn you, you must be surrounded by evolved people" sounds so incredibly condescending and pretentious it really shows how these people see themselves as superior to others, like your friend who travels a lot and brings it up all the time. Except his stories are rational and meaningful, while stories about tripping balls are so subjective, they're meaningless.
Yes, I'm sure it was a positive experience, but the idea that you can learn wisdom and maturity via chemistry, well, that idea never panned out. Instead you get the typical empty-head drug talk about "seeing god" and "being nothing." And for all the elaborate salesmanship, what do these people get in the end? They're extremely ineloquent and whatever wisdom is purported to be there, just doesn't seem to be there. They've obviously invested into some kind of "rebel" personality and drug culture panders to them. I should know, I was invested in drug culture myself for longer than I care to admit on the internet.
Meh, the counter-culture petered out for a reason. Turns out ingesting random chemicals isn't the big statement so many thought it was. There's no shortcut to being an interesting and clever person. You gotta put the hours in.