I don't see the stretch at all. my image(perhaps incorrectly) of Rastafarians is of very mellow, maybe doped out, not doing a whole lot(at least on the outside). Trustifarian, which shares syllabification and a similar consonant scheme also are, in my view, people who because of their wealth, don't do too much. they might ski, and spend money, but tend to seem doped out, and their contributions to those around them are pretty little.
I'm not sure if I explained that at all well, but there you go. seems an apt coinage to me.



formerly known as etaoin...