I’m going to throw in my two cents even what I have to say is not news to anyone.
Reb Moshe z”l used three Teshuvos to make the point that “Company Milk” should not be considered “Cholov Stam”. The facts speak for themselves.
The Litvishe Velt never considered milk powder or cheese to require Cholov Yisrael. Thus, all baked goods made with powdered milk are still within Cholov Yisrael no matter what their source it. Of course, Lubavitch and Hungarians required even these to be Cholov Yisrael. Thus, if a Yeshiva Bochur eats a cake that is made with powdered milk or freeze-dried whey, he is still within the Cholov Yisrael definition.
Reb Moshe’s own wife ate food that was made with non-cholov Yisrael. If he were to feel that strongly about Cholov Yisrael, he might have told her not to eat these. And I was there, I saw them in the fridge.
Not eating Pas Paltar is a chumra. It was a chumra in the days of the Mishnah. I am often amazed when people consider the eating of pas paltar a kula. It’s fine to be machmir but you should know that you are keeping a chumra rather than consider someone else to be very mekil.
B”H I live in Brooklyn. Most of my family lives in Torah communities. It is easy for me to be makpid when it comes to chalav yisrael, pas palter, and chodosh (the only of the three that could be d’oraisa). However, somem of us must travel to places that are not Torah communities (and I am not talking about taking vacations) and must rely on lenient opinions, kulas, and heterim. Some people may be BTing in places were chalav yisrael is not availalbe or may not be the best choice because it is usually sour by the time you get it home. Some may rely on pas paltar because there is no frum bakery in town. Let us understand that chumras are beautiful, but there are times when making a chumra into a sine qua non results are not what we want.