IQ is one of the most, if not the most, valid metrics in social science.
However, I don't care what mine is, and you shouldn't either. As an attribute, IQ adds no credibility to what I say.
If my IQ is high, but, what I say dull, then I'm just an intelligent person in the objective sense who says some dumb things.
If my IQ is low, but, what I say bright, then I'm just an unintelligent person in the objective sense who says some smart things.
As usual, try your best to analyze what people say at face value- heeding the broken record phrase "correlation /= causation". Interpretation consistency and accuracy are more likely to improve that way.