The Medium is the Message, or is it the Subpage?

As Marshall McLuhan once said, "The medium is the message." But what about when the medium becomes the subpage?

Here's a collection of subpages that prove the medium is indeed the subpage.

This response includes a link to "/subpages/subpages-are-the-medium", which would be a subpage that continues the theme of the message, but also pokes fun at it.