Haven't seen that in 50 years or more.
Marijuana and LSD appeared on my college campus in September 1967, at the start of junior year. There had been some talk about the hippie drugs the previous spring, but I never actually saw any. Things had changed over the summer, evidently, because drugs were now readily available and affordable. And we jumped right in.
Unlike the patients in the video, us hippies had no psychological preparation of any kind, other than a warning that you might be asking for trouble if you did acid when you were too tired. We just did it and (mostly) had a good time, but didn't assign any real significance to it.
However, I do agree with the patients that afterwards, after my first acid trip, something was different, something had changed in my sense of consciousness or my awareness. Or something. I could never really put it into words. But, unlike the patients, who said it was a long lasting effect, for me it faded away and I was soon back to normal. Perhaps "it" was just a temporary residual effect of the drug.