The one big mistake in his premise, however, is that only 34% of WordPress users are blogging, the actual percentage is much higher. The survey he quotes me talking about was of mostly people who make their living building WordPress sites (over 20,000) and mostly WordPress.org users. This community naturally focuses (and contributes) more on the CMS and application framework side of WordPress.
On WordPress.com, however, the vast majority of its millions of users blog, and are blogging more every day. If you visit WP.com you will see a simplified and streamlined user experience that is boldly different from the traditional wp-admin dashboard. Already we've seen huge boosts in user engagement from this new experience, and while it's a few dozen iterations from being ready I'm confident the best concepts will make their way back into WordPress core when they are ready.
But overall, I love seeing different people's takes on what the next generation of WordPress will look like, and I wish more people did blog posts like this. We've had 3 dramatic shifts in our evolution before, and the shape the next one will take is a topic that occupies most of my waking hours, mind space, and creativity. And don't even get me started on mobile... :)