I seem to recall early information saying Sars cov2 can live over a week on paper / wood. Maybe that's not thought to be the case anymore.
Our local library is holding returned items in isolation for 72 hrs before returning them to general circulation, which seems to be in line with what I've seen most experts recommend currently.
And not everyone is in a position to independently evaluate from first principles what precautions are appropriate and which are insufficient, unhelpful, or excessive.
[0] https://www.bfr.bund.de/en/can_the_new_type_of_coronavirus_b...