And what is your reasoning behind that? People who take psychedelics are very familiar with the concept of not breaking through and being stuck in a limbo state between where your ego still has a chance to fight.
Also please note this we are talking about a world renowned expert in LSD psychotherapy, who has 5 decades of experience in the matter. How many trips did you guide?
https://en.wikipedia.org/wiki/Andrew_Feldm%C3%A1r