AviraDeArah,
“You – where does rav moshe say it’s a chidush?”
Igros Moshe, OC, 1:139:5, 4:87
“Counting Street lights as mechitzos, something the matirim use, is most certainly a chidush.”
First of all, its less a chiddush than Rav Moshe’s chiddushim. Second, the light snif has nothing to do with mechitzos, but only that the philush is broken. Third, the mechitzos they are referring to, have nothing to with the lights, but only regarding the mechitzos encompassing Brooklyn. Please learn the inyan prior to pontificating.