That's not always the case. There are functioning alcoholics and drug addicts that have perfected not getting caught. "We're" just now knowing about this but this could've been well known behind closed doors and he prolly got caught at Duke, we just never heard about it. I think JJ Redick was well known for smoking weed while at Duke. I'm sure he's not the first or last Duke player to smoke weed.
It kinda seemed like you were labeling it as a certain type, which is why I kept asking for clarification, but I take your word for it that you weren't trying to do that. That's just how it came off (to me).