Just because you don't care about some old book doesn't mean that it has value to noone. One of the books found in the monastery was a thousand-year-old document written in Caucasian Albanian, for which there is no other documentation than short stone inscriptions. The Udi people speak a descendent of this language, but their language community is under severe threat. Something like this would probably be very important to a community trying to save its cultural traditions! Not to mention the historians and humanists who can often glean some amazing insights from the scanty evidence left to us by history. The last printed-out Hitler Pepe meme might be very revealing to a far-future historian trying to understand our times.

Cultural traditions are exactly those things that generation after generation of a community has seen the value of preserving.