Bildung. Reclams Universal-Bibliothek: Band 18182 Book

This is really lazy musicology. Robert Simpson was an opinionated jerk, obsessed with the idea of the Classical symphony, who would literally insult anything that didn't fit into his perfect little models, of which the only thing he has anything to say about is harmony.
Nielsen meets his exacting standards (everyone else apart from Beethoven, OH, OH, BEEETHOVEN) is literally insulted.
There is a moment in Nielsen's 'Symphony No. 6' where he did something a little different. This moment is viciously derided by the author as a symptom of Nielsen's heart attack.
Simpson's music is as arrogant, obvious and pompous as his prose.