@blatham,
I'll agree that is Bernie's theological explanation for it. He unfortunately doesn't take the trouble to tell us just who "crafted the system" he intends to overthrow; demonstrate to us how they supposedly did it; or show us any examples of systems, such as those he proposes, delivering anything close to the results he promises. The reason is simple - there aren't any. This is pie in the sky nonsense, but it does indeed have the appeal you note.
Bernie's a somewhat likeable guy and I suspect he really does believe all that ****. Indeed he conveys a sincerity and authenticity that is rare in the current political season (entirely missing among the Democrat candidates), and I believe that accounts for a lot of his success so far. However it would be very bad for us all in the highly unlikely event he was elected, and in the even more unlikely event that he ever got a Congrress that would enact his programs.
I'll agree his message does have some evident appeal to many including the young and inexperienced, but, in a year in which I doubt my own intuition about events, I still doubt that he has much of a chance of getting the Democrat nomination.
I hear on the news that the contest in Iowa is very close between Hillary and Sanders: there were earlier reports of a slim Clinton lead. but the latest indicate a near tie. If that is the result I think it will cause some difficulties for Clinton, though her prospects in the state primaries ahead still look a good deal better.
I understand that Cruz is leading Trump among Republicans and that Marco Rubiuo did unexpectedly well. I'm indifferent to the Cruz/Trump part, but the latter is very good news to me.