I wouldn't be surprised if some of the early warnings against cannabis and RV were partially to distance RV from a sort of hippy, new agey association that would damage the scientific credibility they were trying to generate. Although I can see how it would be easy to lose focus as well.
You might like a book called "Busting Loose From the Money Game". It can be found as a PDF. It is about "subjective reality". There was a video that did a good job of describing subjective reality with animations but I can't find it and that would have been over a decade ago.
I think you are correct. I kind of respect things like ayahuasca, where there is an intense price to pay (vomiting and the like) for the insight you get. Just so it isn't some trippy, feel good short cut to enlightenment. Even Stanislov Grof's Holotropic Breathing came with the price of...
I'm not actually sure this IS off topic but I didn't really know where else to put it.
"Stronger measurements came from the direction facing toward the Milky Way’s galactic...
If I recall correctly, Robert Monroe used to run into a vortex at times. He said (if I recall correctly) to direct your attention to about 6 feet out from head and up about 30 degrees. If I find the time I will try to find the exact quote.