What I have heard from a lawyer specializing in IP law is that the definition of "satire" as it applies to fair use in US courts is actually far narrower than p

What I have heard from a lawyer specializing in IP law is that the definition of "satire" as it applies to fair use in US courts is actually far narrower than people usually use. To qualify as "satire," it would specifically have to "comment on the original work"--commenting on, say, the author of the work would not qualify it as fair use.