“start with the obvious.
(A) There’s no reason to vomit after drinking cholov stam. (B) R’ Moshe Feinstein was renowned for his genius and didn’t do stupid things. (A+B=C) R’ Moshe didn’t vomit after drinking cholov stam milk. “
just saying that there is a spiritual effect that eating not kosher has on a person. im not saying that C”S is non-kosher, just that it might be comparable to one whos does not eat C”S.
i cant remember the source for my original statement, so i understand if you don’t hold by it, but it definitely came from a vaild source.