Not fun.
Is it impossible to don't afraid of anything?
Or maybe even scarier / more powerful: is it impossible to simulate it, adequately?
Be wary of applying double standards here.
Also, note that it says "the" mystic, whereas your claim is "anyone who". You also made broad negative claims.
Mysticism is often counter-intuitive, and imho "woo woo" isn't genuine mysticism.
I consider myself a bit of a "psychonaut" and occasional practitioner of meditation.
But I had to cultivate this appreciation. I believe the DR/DP was a manifestation of my self's resistance to a new way to see the world and a new way to relate with my self - or lack thereof.
I stopped resisting, DR/DP went away... easier said than done though, I know. And I'm sure my experience was unique to my own.
So too with DP/DR.