Some marketing people made a bad decision.
The song is great.
Not knowing what a mull is - is a bad excuse
Many don't know what things are in other songs, but they learn them soon enough or accept them as they are. A beautiful song - even on a first listen one could hear that it was about a place and try to find out what this place is or just always listen to it as is and still enjoy how it all goes together.
Just a bad guess by the music people in the U.S.A.
The true fan knew it and played it.
The Maybe I'm Amazed and Band On The Run Fan may not have known it.
As another guess, the USA music people may have heard 1 second of bagpipes and guessed not to play it
because of their poor decision- many would not hear it.