Possible meaning
Just finished rewatching it (never read the book btw) here are my thoughts:
Candy is an innocent continually seduced throughout by means of, romanticism,(Burton), patriotism (Matthau), profesionalism (Coburn), mysticism (Brando), just to name the isms (there is also bullying, sympathy, promise of fame etc.).
The institutions on which every society is based are an illusion, and are used for men to seduce women. Just a thought on a possible interpretation.