Bald Eagle, this may sound rude, but by your own admission you don't know what you are talking about in this case: "I've never heard World Turned Upside-Down"
Reading a song as if it was a poem and then dismissing it because it doesn't scan the way you think it should, when you've never heard it - that just doesn't make sense. Songs are songs, and different rules apply.
In fact I think that this song fits perfectly with the tune. And that is hardly surprisingbecause Leon Rosselson is a wily and experienced songwriter. When you've heard it, you might disagree, and think it doesn't work. But until you've heard a song sung, don't criticise it for those kind of reasons.
I suspect that it's what the song is saying you disagree with really, and that is OK - it's not written in the expectation that everyone is going to agree with it.