Even if we grant that this decision was correct (perhaps) and that it is analogous enough that it applies to this situation (I'm very skeptical), there are stil

Even if we grant that this decision was correct (perhaps) and that it is analogous enough that it applies to this situation (I'm very skeptical), there are still restrictions on what you can do with any information you'd acquire this way. If $FAMOUS_AUTHOR throws out a manuscript copy of their new book, you may be legally allowed to pick it out of their garbage, read it, and even show it to your friends, but you certainly cannot publish it as your own work (you can't even publish it under $FAMOUS_AUTHOR's name).