This is a good thing to a point, right? They sell heaps of stock, some old / outdated stock (like "Pass Your Driving Test, 2018 Edition" as per the article), in bulk, at full price, no questions asked. Retailer's dreams come true.
(I don't believe them being digitized for consumption by AI will impact book sales much, as ebooks, google books, project gutenberg, etc didn't either)