“There is no such thing as cholov stam anymore (except Germany), it’s called akum or cholov treif, per Igros Moshe, Rav Eliyashev, Rav Shmuel Wosner, etc. ”
People “feel better” when they call Cholov Akum – “Cholov Stam”! It sounds better. Makes it kind of parave: no “special hechsher” but no issur either.
Marketing, branding form our perception and creates our beliefs.
Calling it “Cholov stam” brings self-absolution when eating the Haagen Daaz.