I have a very intelligent, kind friend who lives alone, got deep into meditation during covid, started hallucinating / getting increasinly paranoid, and ended up hospitalized for a couple of weeks and diagnosed with schizophrenia. She is doing better now but will almost certainly have to drop out of school. That's not to say meditation is a bad thing, or should be avoided, but it isn't without risk or harmless necessarily either. If it can do so much good, what's to say it cannot also do bad. The mind is a powerful thing.