Dear Youdont,
Cute post.
I’ll get to it all eventually.
But you really only have to answer one line in Rav Moshe’s teshuva from 1978 he writes that ” “that it is all printed at length in every detail in the first volume of Iggres Moshe.” In the first teshuva, there is no mention of any number for a city besides 600,000. It would be here:
https://hebrewbooks.org/pdfpager.aspx?req=14673&st=&pgnum=239
Clearly, Rav Moshe’s opinion is that counting the city would not change his psak. Is Rav Moshe entitled to that opinion or not?