Speaking of drugs, the only members of BT5 that I think have never done drugs are SG and V. I'm pretty sure, based on my personal experience as someone who's neurodivergent, is that V is neurodivergent. Many many many years ago, info was circulating about V there were sources claiming he is on the spectrum. Which, based on what I've seen, makes a lot of sense. Regarding SG, he's been very vocal about seeing drug users as weak and beneath. He has a very clear issue with substance abuse. At the same time, he also has this weird relationship with alcohol. I really think that he whole move from Daegu to Seoul pre-debut was to sort out his drinking problem. A lot of alcoholics change cities because they think moving will fix it for them. His song Honsool is also really, really descriptive of his unhealthy drinking. I highly recommend reading the lyrics, because of the details they give and it's one of those "tortured artists" things, and if you're into that it can be very interesting.