The book is certainly opinionated — it's state-produced propaganda. As for the blog post — it's a blog post. It's opinionated in the sense that making fun of S

The book is certainly opinionated — it's state-produced propaganda. As for the blog post — it's a blog post. It's opinionated in the sense that making fun of Stalin's tetchiness carries an implicit opinion, but other than that, there are few opinions expressed.