I am not a baal nefesh nor a lamdan. What I do know is that all of us, the kadosh boruch hu excepted, are finite and have finite resources. Therefore, whenever we are machmir in one area we are, of necessity, meikil in another.
The extra money spent on Cholov Yisroel cannot be spent on a nicer arba minim and cannot be given to tzedaka. And so on.
So what are we to do? Everyone must choose their path in life – in this season between Pesach and Shavuot it seems appropriate to quote Pirkei Avot – Eizo derech sheyivror lko adam… asei l’cha rav.
Let us also remember shiv’im panim latorah. So the converse also holds. Someone who is “meikil” on CY is likely machmir on some other mitzvah and deserves our respect for that.
Finally, you could all move to Israel where most of the milk is Cholov Yisrael and the choice is between “Rabbanut” CY and “Mehadrin” CY.
Enjoy your dairy products on Shavuot.