I had a whole zoo of - physical - O'Reilly books back in the day. I still own a few today, but they tend to be less language-specific and more 'best practices'-oriented (Hello, 'Bad Data Handbook').

What made me stop was not LLMs, but that I started to get frustrated by every book spending what felt like 20% of its volume on 'how to properly install this' - something that was little value to me (that's the packet manager's job, and I am not screwing up my installation becaue you like that other processor flag more) - while prices rose. Final nail in the coffin was when O'Reilly decided to aggressively push their subscription model. I'm not paying money every month to get access to a library whose books can disappear at will.

I still buy the occasional No Starch Press book.