There is no question whether or not communication matters, but the question is just when and how. Project owners and sponsors must manage the balancing act between rationality und emotion. Even the most reasonable projects are in need of a professional communication. Decent communication turns question marks into notes of exclamation.
Early communication with, explanation to and agreements with relevant stakeholders saves costs and avoids negative media coverage.
By the way: For hydro power operators continuous communication is one of the corner stones of trust building with society.