1. there's a belief, that if a person gets hiccups - someone somewhere is mentioning them...poor David...
2. anyway - there has always been a niche for those (seemingly)non-catchy ones, and not that small a niche btw... plus if there's something more to the song, than just a pretty tune, whether it is lyrics, mood, reflection of authors active citizenship etc - it will find its way...
so (guess I am repeating myself here) I don't think there's some kind of doubt whether his album will find responce/be commercially successful etc, but rather some personal decisions.