I agree that most of them have a clear point they are stating. Whether one likes or hates Makeout Party one must admit its meaning is quite clear .
But songs like Nuclear Family, Wild One, Baby Eyes, Dirty Rotten Bastards or the Forgotten sound nonsensical enough to me. You may be able to tell some vague sentiment, but how does it differ from Champagne Supernova then?
By saying nonsense, by the way, I don't mean that the song necessarily has no lyrical point at all, but rather that it feels like half of the lyrics were written only because something has to be sung, so those lines or verses generally do not make sense, only fill the empty space.
Again comparisons to Noel Gallagher (And Dylan, though comparing Bob to the lyrics on the Trilogy is very severe blasphemy) are justified. He too used to come up with one or two catchphrases and fill the rest with some random vague rambling.