There's one or two charts in the article, showing how many experts believe the IQ gap is 0% genetic, how many believe it's 10%, and so on, up to 100%. There's a large spike at 0%, then a noisy, mostly equal distribution up to 100%, where it drops back down to near zero - i.e. almost no hereditarian believes environment plays no role. So yes, there's no consensus, but the view that IQ is hereditary is well represented among experts - moreso than the opposite.
The Flynn effect disproves nothing, much like the increasing average height doesn't imply height isn't heritable. As I don't believe IQ is 100% determined by genes, there's any number of explanations that are consistent with heritable intelligence - changes in culture, environment, upbringing, nutrition, air quality, levels of athleticism, etc. For example:
"Similarly, researchers have shown that differences in the ways boys and girls spend their time (e.g., playing with Legos) (Bornstein et al., 1999), toy selection (Goldstein, 1994), and computer videogame experience (Quaiser-Pohl et al., 2006) are responsible for differences in their spatial abilities, also loaded on g."
> The example you use to critique the video I posted is also not very generous
The example was to show the video author was being deliberately misleading, going out of his way to hide data that opposes his conclusion. Meaning everything else in the video is probably similarly cherry-picked.
> what is intelligence anyway and how can it be measured, if at all?
I don't see how minor fuzzyness in the definition of intelligence casts any doubt on clearly defined IQ scores, especially when IQ has been shown to be such a useful and important measure - IQ is very predictive for success at other tasks also considered to require intelligence, such as academic achievement - this is referred to as being g-loaded. Moreover, the more g-loaded a test is, the more heritable performance on it is [2].
> Another relevant question is what exactly is the scientific support for "race" as anything other than a meaningless label[0]?
Race is simply how closely related people are, at a very coarse level, where clusters correspond to races. See this post: https://news.ycombinator.com/item?id=22052174
[1] https://www.cato-unbound.org/2007/11/13/stephen-j-ceci/signi...
