Only if you’re naïve about IQ and worship it like God. Here is wikipedia’s second paragraph on IQ:
Scores from intelligence tests are estimates of intelligence. Unlike, for example, distance and mass, a concrete measure of intelligence cannot be achieved given the abstract nature of the concept of “intelligence”. IQ scores have been shown to be associated with such factors as nutrition, parental socioeconomic status, morbidity and mortality, parental social status, and perinatal environment. While the heritability of IQ has been investigated for nearly a century, there is still debate about the significance of heritability estimates and the mechanisms of inheritance. Current best estimates for heritability range from 40 to 60% of the variance between individuals in IQ being explained by genetics.
None of that stands out to me as particularly controversial, certainly not pseudoscience. Emphasis on second sentence – it’s not a concrete measure of intelligence.
IQ is, at most, a notion of intelligence. Or it is simply a number. Regardless, it has correlations with other things, and that’s what’s interesting. Asking whether it is or is not “intelligence” is merely semantics.