“If so, then his conclusions here are wrong.”
What kind of nonsense was that? Most people are mistaken about things quite frequently but it does not follow that they are wrong about everything. Evaluate what he said. Is there something you disagree with? If so please share it with the rest of us along with maybe a little explanation of why you disagree.
It was just a gentle dig at people of our political persuasion who seem to think that because somebody once did not toe the line of orthodoxy his opinions are forever rendered invalid.