I think the intent was making a blog has additional requirements one might not need to just make a website, a la what the "The Hard Way" section tries to argue against, not a claim a blog is not also a website (anything the page says not to use will also lead you to having a website as well - just with more than minimal work).

E.g. the section covering RSS for your post is longer than the section covering HTML, you don't really need a fixed structure, and you don't need to think of a story to write unless that's what you want to do. You can just post a picture of your cat and try to add googly eyes later if that's what floats your boat. Or just "Hello World" and let your mind go from there.

Yes, but the author's title framed it as a generic "website", not a specific web log site.

Kids these days forgetting what blog is short for! ;)