Takes2toTango: It’s completely false that “most” Israelis on their way to becoming BTs who go to Uman are “druggies or worse.” Just because you have a false stereotype in your head about Breslov BTs does not mean you should spread this falsehood on the Internet.
For example, NaNachs are very visible and many people’s idea of what a Breslover is, but in fact NaNachs are only a tiny proportion of all Breslovers and all BTs. And contrary to what you might think, most NaNachs don’t have anything to do with drugs. (That said, I personally don’t agree with their hashkafa).
Breslov has always had some interesting characters, since there’s no membership list and anyone can just call themselves a Breslover and thereby become one in other people’s eyes, but that doesn’t mean that most are into bad things. As with any Orthodox group, the vast majority are fine, upstanding people.