Rant: The level of discussion on this sub around what 'IQ' is, its heritability, and group differences seems abysmal

Discussions around testing, cognitive profiles, & all that seem well and good. But it still feels like so many buy wholesale the concept of 'IQ' as measuring some latent & innate general cognitive capacity, some essential & real biological construct in people's heads or genes. As far as I understand, there's no good evidence for this; plus this is often combined with overstating the predictive validity of 'IQ'. Then related to that, so many of y'all seem to not understand what heritability estimates are. And finally, all of these misunderstandings lead to a lot of foolishness whenever the topic of group differences pops up, made worse by a contingent that seems to have no care for substance but just likes the fantasy of being keyed in to some forbidden "truth".