A lot of them are rotting. We are not talking "one of the three living copies of the first edition of Joyce's Ulysses". Rather "1956 statistics of the cultive of yuca in 'some small village from Mexico': a boring analysis". Those books have value to train LLMs as they are 100% free of AI text, but has been collecting dust (or rotting) in someone's room for decades, and no human is buying them even for 10 cents.

Also, Anna's text implies that the books are scanned and then mischievously destroyed so nobody has access again to the content. That's not the case: the books are "destroyed" before scanning, by dissasembling them in pages so they can be feed to the scanner. Scanning while keeping the book intact is difficult, as you need to software-unwarp the page before OCR'ing it, and expensive as you either need specialized scanners or humans doing it.

No, they are not. A lot of them are rotting and get thrown or given at the end of the day.