I promise you, librarians are not intentionally throwing first editions and rare books out in the trash. It will apparently surprise some of you to know that we are actually trained on weeding. Books go througha process before they hit that dumpster.
The posters saying "wait till you hear how many books the librarians shred" are being disingenuous. The destruction of books is not by itself what's causing outrage. It's in combination with many other factors, chief among them AI companies' history of unethical and even blatantly illegal actions.