I'm submitting this article because I thought it was somewhat objectively written and an interesting subject to consider. My impression (from far away) of some of the meditation gurus is also that they look like they are kinda addicted to their new "hobby". Also, it's rarely healthy if your income depends on you strongly believing in something (anything, really).

"60% of the participants reporting distressing experiences were meditation teachers"

"Britton theorized that the effects of mindfulness might follow an inverted U-shaped curve, where at some point therapeutic returns not only diminish but mindfulness could have negative side effects"