qa-
You keep repeating yourself. Maybe if you elaborate on where you’re coming from with that statement, you might convince me.
There is no such thing as being mattir a davar assur. If anyone ‘finds a heter’ what they are saying is that there is a loophole in the halacha that allows this, and therefore according to the letter of the law it is fine. Sometimes there is room for a chumra, and when one uses the term ‘l’chatchila you shouldn’t eat x’ what they mean is that it is mutar but there is room for a chumra. Just because something was thought to be the halacha doesn’t make it the default position, which automatically de-legitimizes anyone who figure out that the assumption is incorrect. Someone who ‘finds a heter’ is simply demonstrating that the previous assumptions were incorrect.
I’m not sure if you are just arguing about semantics, but if you are not then in essence what you seem to be saying is simply that the gezeira d’rabbanan of chalav akum applies to chalav stam. That is something R’ Moshe, and many rabbanim disagree with, and if they didn’t they wouldn’t have ‘found a heter’.