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Ha - yes, you're right it sounds like a tautology. I worded my answer to reflect the absolute statement of no manager is ever needed.

"Shouldn't the creators and clients have a major, high impact role and the coordinators a supporting role in terms of decision making?"

No. The creators usually answer "how to do it". The more important question is "what to do". Both groups are important but doing the right thing is more important than how you do it.