There's no reason you can't have both the ease of static site generators and the non-coder friendlyness of a CMS.

If anyone is interested I recently launched http://www.webhook.com as a way to have both words. Data is stored in a Firebase so you get clean JSON data so that you don't need to deal with all the bloat for simple content sites. We're currently cleaning the code up and will have it all open sourced by the end of August.