I think the problem is that she doesn't appear to actually care about books as physical objects either.
She just latched onto the "books as objects" thing because she thinks it validates her transparently superficial interest in literature. It's an incredibly convenient topic for her to bring up any time she's caught just harping on about the beautiful covers and pretty pictures while never having a single thought to offer for the actual contents of any book she professes to have read. But she doesn't show any care for physical books other than as handy, disposable props to further her fake bookworm persona.
She eagerly mishandles and trashes her own books, including rare texts and first editions. Her home library is a disaster of heaped books thrown into a random room to gather dust. She tosses first edition books in her bag to get bashed around (and quickly fall apart) just so she can have an old book to wave around as a prop in videos. She wandered around with stacks of borrowed library books getting soaked in the rain, just so she could be seen on camera with an armful of books on Oxford campus. She slathers books in toothpaste and paint. The first thing she did when buying a rare, first edition book in France was to get an ink stamp printed in it, to the horror of the bookseller.
I wouldn't trust her to look after the book section of her local charity shop for 5 minutes, let alone work with an archive of valuable, rare texts full-time.