cantoresq,
To your credit, you are the first responder in this thread to substantively address the point the poster made.
But I think the area that you missed is that his point was not that you are not entitled to make any halachic point or counterpoint as in a Beis Medrash setting. That is surely a given. The point was that comments that are heresy, sacrilegious, kefira or attack elements of the Torah, are beyond the pale in the Beis Medrash or outside, and thus unacceptable.
That is the theoretical discussion (or as a barrister, the point of law not the factual findings.) Now whether you indeed made such heretical comments is a factual matter.