It already is, most of my friends don't read anything beyond social networks anymore. This is already happening and was in progress long before LLMs, they are mostly fast tracking the process.

Just the other day, someone saw a pile of textbooks in my room and commented incredulously that I ‘still learn things from books?’

It was one of the most jarringly alien things I’ve ever heard, like being told that everyone has moved on from toilet paper to just using their hands, but I missed the memo.

I can't imagine. I get so much gratification from reading all kinds of things. I enjoy a bit of stuff like this, but to go without things like science fiction, research papers, fantasy, other novels... I'd feel like there was so much missing.