Complex sentence: Despite its relative success, the song attracted criticism for its light subject matter and is sometimes cited as a sign of the decline of McCartney's songwriting talent after The Beatles, despite being recorded for a children's film.
Split into simpler sentences: Despite its relative success, the song attracted criticism for its light subject matter. It is sometimes cited as a sign of the decline of McCartney's songwriting talent after The Beatles, despite being recorded for a children's film.