the only (semi) synthetic SWIM is interested in is LSD.. Was his first psychedelic and the one he took most times in his life. Its a great tool ! not so much about 'morality' and conscience for SWIM as other natural entheogens are, but it is a lot about ideas, intellect, insights, body consciousness, etc.. Not to mention it is amazing to listen to music with, take and be half-social with some tripping buddies, explore nature, etc
plus, the acid chemists and upper levels of distribution are special ppl, not just any meth cooks and dealrs looking for profits or something like that.
as a psychologist, though, SWIM is open to the idea of MDMA use in psychotherapy, but not for himself. Used it a couple of times years ago but its just not his thing, feels too plastic and fake happiness