And for the sake of the ignorant expat-types who live in farang gated communities and actually don't rub shoulders with the commoner Thais, the problem is methamphetimines - yaba. It's extremely cheap, very available, and wayyyyy too many kids in the villages use it. And the connection between those who manufacture it, traffic it, sell it at the local level and those in positions of power to stop it, well, they've been walking hand-in-hand for a very long time.
Big money in the yaba trade. There are a lot of casual users? Most "users" simple take pills and they are sort of limited by money, to some extent. The sh*t is really cheap now. Addicts? Some but its probably in direct proportion to each individuals ability to get their hands on enough money to afford vapable quantities of crystal meth. Tweekers - meth addicts - bad news baby. I was around that scene back in the 60s and 70s but it was never my cup of tea. I'm glad I never had a physical attraction to it. I was more of a kegger and pot type of guy back in those daze with a few analogues of this and that throw in for fun. Once out of university I bagged that scene for good and moved on to being a working family man. That's a whole other story which ended in me dumping my tweeker ex-wife and moving on.