[Obi_Juan_Kenobi]

IQ heritability is well-characterized, and not controversial in my view.

Results are very consistently around h = 0.7 to 0.8. There is more environmental influence in adolescents ( h = 0.5 to 0.6), but that still converges to the higher genetic influence by the time they're adults.

IQ is highly genetic, and there really isn't a strong empirical argument against that.

What is controversial is the 'race realism' dumpster fire. Virtually none of those 'studies' have any scientific merit, and what evidence we do have suggests that variation between distinct populations is quite low, and that such variation does not reflect any common prejudices or 'racial lines'.