Assuming that you consider every single one of the titles on this list to be “porn”, but while many of them might be dubiously appropriate for (especially young) children, I don’t think very many of them meet any reasonable definition of “porn”.
https://docs.google.com/spreadsheets/d/1AVW8q-B4uSZIJ3mLqc5t...
this is an extremely bad faith interpretation of librarians upholding the first amendment.
Teachers wanted to have books like this: https://www.youtube.com/watch?v=_Cd5VUhMrF4 available in classrooms (this is on the MO 'banned books' list). Parents (obviously) objected to this, but the teachers/librarians dug their heels in.
Due to a loss of trust, parents started demanding oversight into everything that the schools/libraries were making available, and that's how you end up with absolutely crazy things like banning photos of the statue of David.
I see you skipped the “nuance” part of the request.
I couldn't find that mentioned anywhere in the linked article...?