Am I misunderstanding the article, or is it basically just describing sprint planning?

I was set to be annoyed by the article, since it seems to me that a lot of PM practices put way more emphasis on planning to do things, versus actually doing them, but after reading it it just seemed like a slightly modified version of what most teams I have worked on do for sprint planning.

Which makes me feel like I missed something in the article. Perhaps it is geared towards PMs who don't have any experience or appreciation for "agile" methods?