Now I understand.
This is a “our gedolim” and “your gedolim” issue.
You really don’t respect “our gedolim”, and think we don’t respect “your gedolim”.
Also, since you read the teshuva, you ought to know that the numbers he uses are 4-5 times of shishim ribo. that equals 2.4m-3m. The population of Brooklyn has always exceeded that.