>I think they replace those filters with ones of their own making, and while thus leading to a different schema than sober exposure to regular life, they do not necessarily lead to a "better" one.

Yes, partially along this line of thought I have consciously decided to not take any psychedelic drugs at all (or drugs other than coffee really). I am quite happy with my status quo, and taking psychedelic drugs may pull me out of it. I do realize that psychedelics do dissolve the ego, but I find having an ego is quite helpful in life in that most of my main accomplishments thus far have been by me standing up for myself and taking a shot in the dark. And I couldn't have done so without an ego.