Meditation is potent and should be treated as such. The good and the bad, much like any intense experience in life. Something to be especially aware of if you're interested in more than just dipping your toes in there. So, not talking about the basic ten minute guided mindfulness meditation.

The meditation community (in the west) has a very weird relationship with the negative side-effects. We also have a poor structure to support any of the weirder effects, without just making the recipient of those just feel way more weird and/or crazy. Which is the result of it being uprooted from an entirely separate framework and brought over, sometimes without much care.

In more concrete terms, people have had bad psychotic breaks during/after meditation retreats, or just as a result of going in too deep, etc. You can read more if you are interested:

https://harpers.org/archive/2021/04/lost-in-thought-psycholo...

https://vivo.brown.edu/display/wbritton

This comes as a shock to some people, even if it's obvious that other age old traditions - such as consuming Ayahuasca - should be treated with the utmost respect when it comes to the good and the bad.