It's hallucinogens. That's the drug of choice in tech. What that leads to, other than the obvious hallucinations, is an obsession with set and setting. Bad vibes will literally give you a bad trip and ruin your high. I've seen this with wealthy shroom heads over and over again. Their entire life becomes centered around making sure the set and setting are always perfect, which means any little bit of someone trying to talk some sense in to them, they get ignored.
Once you start to think through the kinds of behaviors that shroom addicts would start to engage in, especially if they had the wealth and resources to facilitate their addiction, you'll see it everywhere. It's not the typical "ruin your life" kind of addiction, but it's having an impact on what kind of ideas are allowed among the SV venture types.