I don't see how this is related. I know people who are lot smarter than me and I would call "hackers" who regularly consume cocaine. It's a (quite dangerous) lifestyle decision with disastrous long-term effects but very little, if any short-term effects on their intelligence or creativity.
This article doesn't really tell us anything. He could be drinking coca tea once every few months, or he could be smoking crack every day. Or he might just be a collector who doesn't even use the drugs. I wouldn't jump to any conclusions.
