Reply To: Do any Frum Anti-Vaxxers Drink Cholov Stam Milk?

Milhouse: Therefore it comes out that if you buy a sealed tamper-proof carton of milk from a bodega, you are completely certain, as if you saw it with your own eyes, that from the time it was delivered to the bodega nobody put anything inside. Any problem must have happened earlier. Since we have no reason to suspect anything did happen earlier, and we have eidus that nothing happened in the bodega owner’s reshus, Reb Moshe holds that it has a din of cholov yisroel.

Where do you get this from? If that were true, you could buy sealed milk even in a country with no government regulation, (as long as adulteration is assumrd uncommon) which Rav Moshe was never mattir. Similarly, the whole revisitation of the heter mentioned in the articles linked above would have been pointless.