Charlie,
“Some RYs are actually very concerned and have sponsored drug abuse programs; others seem to live in terror “
As I said earlier, people base their observations on the cicumstances they find themselves in. The yeshivas and R’Y i am familiar with do not have massive drug use.
Apparently, and sadly, you seem to have found your self in different circumstances and the yeshivot you are affiliated with have such an issue.
Perhaps they have to buckle down and be more conservative in theor approach to recreational drug use. I am not sure, but perhaps being too liberal is what leads to such problems. And it certainly is a problem.