> sounds like you have not given any time to a truly good-faith exploration of these methods

To me, this is just a variation of "never mind the science, why don't you try for yourself" argument you find in quackery. I found a disconnect between what people were reporting and actual behavior in meditators.

> only the most incidental and bottom-of-the-barrel evidence.

Are scholarly reports of psychosis bottom of the barrel or are testimonials from meditators the bottom of the barrel? Perhaps next, you want to make an argument from popularity?

You might just be completely unfamiliar with the emerging scholarly literature on the topic.

Lambert, D., N. H. van den Berg, and A. Mendrek. "Adverse effects of meditation: A review of observational, experimental and case studies." Current Psychology (2021): 1-14.