Argument about Chalav Yisrael

One day in the Touro lounge, I was having a debate with a girl on the topic of Chalav Yisrael. She personally kept it, but was of the opinion (really her fathers opinion) that non-Chalav Yisrael was perfectly kosher. She (and her father) actually didn't believe this, and it only took a minute to prove it to her.

Me: Your father believes that non-Chalav Yisrael is perfectly kosher, correct?
Her: Yes
Me: So if he believes that, and I came to your house, took one of your dairy pots, boiled some OU-D milk in it and then washed it out, would he use it?
Her: No
Me: What would he do to it to make it usable for himself again?
Her: Well he would boil water over the top
Me: What is that process called? Kashering. Why would he need to kasher a perfectly kosher pot? It is quite clear that he himself doesn't believe that non-Chalav Yisrael is kosher and is just saying so for politically correct reasons.
Her: silence with a smile....

However, there are those people who would eat out of such a pot who invented this new form of kashrus called Chalav Stam, another fake version of kosher which I will debunk in a later article.