In a way they are, although, while on shrooms, e.g., lively stuff keeps on dancing gorgeously to a universal concert of uncanny connections and natural integrity. This is more encouraging I think than a hole, which has a glorious sense of feedback completion IMO, but may not expand into an infinite mandala of lightness which may be the goal of the ego losers.
in both cases distortion of body sense, like the Immaterial state on the salvia scale, is part of it.