I can’t believe how strange of a take this is. However, I’m going to guess that you don’t actually play the guitar, bass, drums, keyboard. That band is one of the most creative group of composers out there.
Berninger’s baritone has plenty of range within the sound they are after, but if lead singer vocal range is your single criteria for determining band musical talent, then I guess we view music differently.
As one point of reference, I live in a family of pretty hard core guitar and piano players, and they love playing National songs due to the uniqueness of the compositions.