It is actually a trichotomy: close-minded, open-minded, and so-open-minded-that-all-your-critical-thinking-ability-has-run-out-your-ears. At least a third of HN commenters fall into the third group.

I think that HN is just open-minded. Psychedelics aren't for everyone, but everyone should have the option.

Except everyone who doubts the effectiveness or safety of psychedelics gets downvoted to hell. No debate, just downvotes.