Dear Youdont,
I will post how I understand Rav Moshe’s opinion when you answer the question.
Is your perspective helping the OP with his dilemma? Do you think that your posts here would help respond to his detractors? [Do you even understand what I am getting at with these questions?]
PS Of all the talmidim of Rav Moshe that I met that are okay with using wipes on Shabbos, cholov hacompanies, and turning off gas burners on Yom Tov, none are okay with the Brooklyn eiruv. This includes some serious talmidei chachamim that are renowned for paskening sheilos.