In any case, why isn’t anyone asking Rav David Feinstein?
As stated earlier, Based on Rav Moshe’s calculations it should not be a RhR of 600k.
And as for the issue mentioned by youdont.. of the gezero etc. I don’t think its relevant after the Eruv has already been constructed. Thus, how can one say it is any transgression of הוצאה, because a גזירה מחודשת. The way I understand , it is a reason enough prior to withold one from constructing an eruv, but once its a kosher eruv, one cannot declare any issur because such a gezero.
Said that, i don’t understand the opposing side..