And I did not express any opinion on chalav stam.
You wrote:
According to the way the OP described his Rav’s response, this does not seem to be a halachic question per se’. It is muttar to drink/eat chalav stam and the Rav whom he asked did not say that it’s assur for him to do so. As far as I can tell, the issue is not “Is he allowed to eat chalav stam?” but “Should he do so?”
I mean that I hadn’t expressed my own opinion on chalav stam. In the post you quote, I was saying that according to the Rav whom he asked, it’s muttar to eat chalav stam (and therefore it is muttar for him to eat it if he trusts this Rav).