Just like VPrime already wrote, there is no artist-versus-programmer cult especially when you use complex technology like Unity. It needs both, skilled programmers experienced with object and component based programming. And it needs good content. A programmer alone will have a hard time just as a pure graphics guy will not get very far. Maybe a few of them are skilled in both fields, but really, Unity is not a game engine for artists. A pure artist will not finish a game with it for sure.