They're like a generic version of a melting pot of sampled and poorly executed style jacking sent through a hipster/indy filter and direct to you on the lovely radio station.
I mean sweet jesus, learn to play the fucking banjo if you're going to use it. Why not listen to real folk, grass, old country vibe kind of stuff. Why listen to somebody take piece of it and just butcher it.
I mean I rip on yonder for being over rated as a sting band and lacking on the banjo but damn, they're pretty much god's compared to mumford.