Although, I just switched over from Wordpress to Jekyll, and I find it there to be a lot less friction for publishing. I talked more about the new and exciting workflow of Jekyll at http://rmorabia.com/redesign
I really don't agree with the author here. Hackability is what's aided my decision to publish more. It's just that a lot of people get caught up in the hackability more than the publishing.
Also, there's no data backing this post. I've seen plenty of active Hakyll sites. http://gwern.net is my favorite example.