You raise an interesting point and perhaps it is both. I think it’s possible to experience negative or awful things and still grow - silver linings and all that. Does that make it good though? A much more serious example could be someone that survives cancer and now has a new found appreciation for life. I’m not sure that makes it “good” even though there were some positive outcomes. The difference of course is that I was never in any danger - though in the experience I certainly didn’t know that.

I am unsure about persistent long term negative outcomes from psychedelics - you bough I know several people that tried them once, had a rough experience and never touched them again.