I mean they used to have a different plan, which involved not destroying the books, and then they got sued for not destroying the books, by us, so now they are destroying the books. What did you think would happen?
They got sued for violating copyright in general, not for “not destroying books” in particular. Destroying the books was a legal trick they used to continue scanning them without breaking the law.
If I were running the AI company and my lawyers came back with “teeeechnically we can still scan them if we burn them after”, I would reply with “I guess we’re not scanning them”, but I lack the sociopathic instincts required to be a tech CEO I guess.