As someone new to people management, actually, prior to people management but with an interest in the topic, I found it very interesting and useful. I was not

As someone new to people management, actually, prior to people management but with an interest in the topic, I found it very interesting and useful. I was not even sure what "IC" meant or what an "engineering manager" might do. Personally, I found there was lots of actionable advice and a clear "path" for how one might operate in different roles in an organisation. Almost any non-fiction book could be described as a series of blog posts or articles, so I don't really understand that criticism. YMMV but I would recommend it.