It is much more likely that the preservation of literature had become less affordable following the collapse of the Western Roman Empire. In the past, books wer

It is much more likely that the preservation of literature had become less affordable following the collapse of the Western Roman Empire. In the past, books were written on perishable material and had to be copied down to survive. The copying was tedious, labour intensive and expensive. Without the Roman bureaucracy I don't see how many books could have survived. This is far more likely to be the reason than a deliberate effort by some fanatical Christians.