So, tell us how this happened according to you. Rav Moshe issued his first psak based on being tricked. Then, everybody who wanted the eruv responded, bringing 11 halachic arguments which he responded to in the second teshuva.
Did anyone suggest he was wrong on the facts? Maybe they didn’t feel like looking into it? Maybe he just stubbornly didn’t care?
Is that what you think?
Besides, why don’t you link us the place where he says there are 3 million people living in Brooklyn. Why do you keep asserting it instead of citing it?
By reading it only to argue with him, you do not give kavod.
By asserting that he issued a landmark psak without due regard for the facts, you are mevazeh him.