Videos and landing pages are only really mentioned once in the introductory paragraphs. The rest is about building sites that people can actually use.
That's just a variant of the video / landing page, basically. Something that looks like a product (and may in fact even offer some partial functionality). But isn't like, you know, a real, actual product. Where "real" of course means sustainable.
Which again might still make sense as a business strategy. But shouldn't be confused with actually "building" something.