Actually, no. Had he been drawn to a programming conference, I wouldn’t have been able to draw a line between the dangers he’d been near and those interests. But when you see someone in a situation, and see them drawn to the wrong things for the wrong reasons, yes of course it triggers at least concern. I wish a lot I had been wrong.
Also a note of caution... You could easily fall prey to confirmation bias on this one. Their interest in shrooms or psychedelics isn't necessarily a straight line to fentanyl. Plenty of people have one without the other.
I have a lot of interest in psychedelics (haven't tried it myself). How would you know if my interest is "for the wrong reasons"? And, what level of judgment clarity is required to know if the reasons are wrong, right, or neither?