"There have been no documented human deaths from an LSD overdose.[51] It is physiologically well tolerated and there is no evidence for long-lasting physiological effects on the brain or other parts of the human organism.[52]"
I think you misunderstand. Survivorship bias in this context means we do not know all of the people who did LSD that did not go on to do anything significant. Therefore it is pointless to suggest LSD has overlap with "interesting people."
On the other hand, every time this topic comes up here or elsewhere, the majority of stories are positive, with a few horror stories (fewer than I'd expect for such an intense experience).
'Survivorship bias' is a misleading term for what you intend to imply, because those who have had a bad LSD experience are no less capable of sharing their intense experience except in the most extreme cases (i.e. when they didn't, in fact, survive). Personally, if I had such an intensely bad experience I'd be quite willing to share it so that others can avoid it. That is just not reflected the balance of stories I read though.
http://en.wikipedia.org/wiki/Lysergic_acid_diethylamide#Pote...