Two ways of seeing the move to destroy books - one is seeing that removing books can't remove the information the books contain, it's all embodied electronically now, and the materials of the books were obtained in times when the cost of the materials to the planet didn't mean much, but now we're submerged by the same materials ripped off for no other reason than to target us with direct marketing, or for the bills for things previously sold to us, and that we signed up for on yet more of those materials, without telling us the real cost of it all.
The other is to just reminisce and feel loss of the times when we learned from those books, I credit a big part of my own character being down to spending a few years gobbling up the sci fi books my grandad built up in a library after he and partner, my grandmother witnessed something they thought had to be extraterrestrial, in 1938.
I still have a few books that I consider masterpieces, classic Engineering books, but have to admit the same knowledge now is almost unnecessary in the new world where the machines we used that knowledge to create, do everything for us, for free, using energy that actually adds benefit to the planet, rather than removing it.
My first instinct is to think it is harmful, to be destroying books, but there are ways to think about it positively, I suppose, admitting it reluctantly.