"I don’t think that any professional UX (or UI) designer will question that it takes more than the designer to get the User experience flowing smoothly."

This is exactly why I prefer calling this role Interaction Designer over UX Designer; it's more precise. The Interaction Designer's job includes developing a deep understanding of users and their needs, creating flows, sketching, wireframing, prototyping, gathering feedback, and communicating this information among their colleagues. They are literally designing the interaction between users and a system. They're not designing the entire user experience.

Digital product design & strategy expert. Team builder. Stoic. Keynote speaker. Co-Author of The Designer’s Guide to Product Vision http://amzn.to/2Epfb3U