The biggest argument against that is the question of "is that IQ score inherent or trained"? Yes, it seems some professions have higher IQ scores. But is that because they're actually smarter? Or is it that they're better educated in the things that score well on an IQ test? It's no coincidence that the professions where people have higher IQs are also professions that are monumentally harder than the ones further down the list. If IQ correlation means STEM causation, we could just as easily flip that around and say that STEM education means IQ increases.

If we are making the statement that certain sections of the population cannot be trained for STEM careers because they don't have the IQ to be competitive, then we'd better be damn sure that IQ isn't something that can be taught. And there is mounds of evidence showing that intelligence is not assigned at birth.

Does IQ measure intelligence, or education? And are either of those static throughout a person's life?