I think the problem is not Joost or Matt. It's the way that the role is defined. When I first read the announcement from Matt, I thought it was great. But then I saw it was just title, not a list of actions and responsibilities.

And as WordPress is an open source, the whole community or the WordPress Foundation don't have an united guidelines to be acting properly in cooperation to achieve a target. It's quite fragmented between teams. And it's not look like an organization.