R Moshe Feinstein said that all cow’s milk in the US is considered Cholov Yisrael, so there’s no extra benefit to drinking the one that says it on the bottle.
he didnt say that
he said cholov stam in the us was mutar, not that milk in the us is cholov yisroel (and many Poskim hold his Psak was limited only to certain circumstances existing at the time he made the Psak, many hold it still applies))