Just because these items can be replaced does not mean that it isn't wrong to desecrate them, of course. I am sure that some of these precious ancient rabbinical manuscripts were one-offs, in the era before printing presses and computer disks, and are lost forever.
Probably about 90% of ancient Christian writs have also been lost--both to Roman Nazi persecution and the wholesale Islamic destruction of any documents from other religions, particularly the sacking of the ancient Christian library in Caesarea, Israel in 640. None of the New Testament was ever actually lost, praise G-d, but many apocryphal writings that, although not actually sacred, taught a lot about the life of the early church, certainly were.