I despise the cult aspect of them more than pretty much anything else about them.
I was curious and checked this video out, but it's just him singing into a camera. Not sure what video you saw. This is the official one:
http://www.viva.tv/musikvideo/60257-george-ezra-budapest
But agree the song is turgid ad-fodder. It's as if USA/UK musicians nowadays to be popular have to be young, sort-of attractive and sing in a fake copy of what we traditionally think of as good strong voices.
This sort of beautiful music (from Budapest no less) would never hit off in USA/UK as the musicians don't look like models and there's no guitar or autotune/plastic beats: