Or a more recent example, the pilot who suffered from depression having a psychotic break after taking mushrooms, because he thought he was trapped in a dream or hell, and attempting to crash an entire plane full of people as a result.
But having been down that road... I'd say the side-effects from them were always more paranoia and reality-destructuring to me (and not usually in any kind of pleasant way) than LSD or other things I tried back when I was young and unwise.
The one advantage I suppose would be that they wear off after 4-5 hours. Not so LSD. Takes days to become normal after an LSD event. No thanks.
He had had a close friend pass recently and he had, within the last few weeks, used mushrooms to help treat the depression/grief. Ie he did not crash the plane mid psychotic break slash psychadelic trip.