To my knowledge, there is no consensus in the LGBTQIA+ community that public libraries cannot give one more cent to Pottermore Publishing, ever, and that if they do, librarians are transphobes. If there is such a consensus, which I doubt, I submit that being a librarian and managing a library collection for the entire general public (while being under pressure from that same general public from all sides) is far more difficult, and less morally unambiguous, than that community imagines it to be.