I have the impression that nowadays most people no longer want to invest the time to read in-depth articles or books on a topic. Myself, I recently read a couple of technical books and came to the conclusion that a good technical book is still worth it. It explores a topic in a structured way and in-depth, and the information in a technical book is supposed to have been reviewed. If you read good technical blogs, you can pick up a couple of things here and there, but I think it will never be as efficient as reading a good technical book on a specific topic.