Meditation is often too broad and connotatively laden a term to have immediately productive cross discipline discussions about techniques and outcomes.
We'd all benefit from an accessible but revised vocabulary for these matters.
So you're saying that one of the oldest and most popular message boards for psilocybin enthusiasts is frequented by tens of people who have different ideas about proportionate combinations of psychadelics and mental exercises than conventional buddhists?
Some other stimulant containing drink or food.