If a person doesn’t eat cholov stam because his shitta (per his mora d’asra/posek) is that cholov stam is not kosher, is he allowed to help or facilitate another Jew (who holds cholov stam is kosher) to obtain or eat cholov stam?
It seems to me akin to someone who doesn’t hold from the eruv to suggest or facilitate for another Jew (who does hold from the eruv) to carry on Shabbos.