Yeah, they're into more serious, addictive drugs on that show. I have seen episodes where they're profiling a heroin or meth user who happens to be smoking a J in an occasional scene. But no, they're not likely to focus on weed as the substance driving the intervention. People do develop psychological dependence on weed at times, and I'm sure there have been weed "psych" addicts in rehab facilities before, but lots more are addicted to physically addictive drugs.

I think "Intervention" is a really good show. I'm betting it helps a lot of people in the viewing audience. Sometimes it breaks my heart to watch.