“sell out on the underlying culture”
Yom mean the Jamacian accent? That’s an act. Alot like Lipa S, when he raps. But when he davens or bentches, he’s just like you and me (ok, maybe not like you, but like me). And if you really must know, Matisyahu goes to great lengths to keep as much yiddishkeit as he can. He is very makppid on negiah and arrainges for minyan whenever possible. For many years, the “jewish face” of hollywood / media was woody allen or steven speilberg and folks like that. By any measure (other than the rasta accent) he does a fine job of showing the world how jews are a part, and at the same time, apart, from secular society. Time was, the only photo of a yid with a beard appeared in the news, he was dong the perp walk. I think this is better PR.(Plus, his songs are really cool, once you make peace with the accent)
Point is, these very visible people prove that us yidden do not need to dress down / change names anymore. (