I believe it really depends on the programming book. For introductory topics (Learning Python, HTTP Basics) one is better off with sources from Google or GPT generated since they are much simpler, faster to access and high quality sources out there. But for more low level topics, books like "Designing Data Intensive Applications" are still the first option for most people; you can't easily find corresponding material online that provides the same level of depth, structure, and context.