Perhaps the objection started out with something fundamentally irrational or opinion-based, and someone was ordered to "reverse-engineer" an objection out of that which wasn't trivially refutable - e.g. "the noise from the turbines will keep our submarine sonar from working" or "reports say that human smugglers are hiding aboard the windmills" or whatever.

Yes, I think thats very plausible. "inshore defense operations in an area of strategic importance will be excessively impeded by both development of this site, and future operations in ways which <REDACTED>" type thing.