I think that without integration psychedelic experiences soon become memories and their transformative potential gets lost. IMO the people mentioned in the article are left with just that - memories - and I don't think their reported current use of psychedelic is true but just something to say to attract people's attention.
So they're left with some insights that they use to reinforce their own goals, maybe even new ideas, more creativity and imagination, but nothing remains about the core of the psychedelic experience.
It's even possible that they never experienced those effects, not even during their trips. I used to know people that regularly took psychedelics but for them they were nothing more than party drugs (even DMT). So maybe for some people they don't have any effect that goes deeper than visuals and strange thoughts, or maybe they forget them very soon.
The part about psychedelics and other worldviews and philosophies being the framework of techno-capitalism seems far-fetched to me. I think psychedelics are mentioned just for aesthetic purposes by those people, just like Steve Jobs years ago did with LSD and Zen.