I hate saying this but IQ is a tricky subject. The turbolibs are partially right that IQ is very biased towards Western expectations. A white person with an IQ of 69 has so many other comorbidities that they are a danger to others around them. A dog with an IQ of 20 can be healthy and helpful to its owners.
I love saying it -- this, yes. IQ is "how fit are you to survive in the modern world". We civilized people take for granted familiarity with abstract pictures, page or task numbers, etc. Here's a good example:

(ignore the stupidass comment at the bottom)
The meme goes, Western women fail this task. I don't know about
that, but it's a task "uncivilized" natives are likely to fail, they can't imagine this drawing representing a physical bottle. They might even have a pictorial written language and their own signs for bottles and pouring, but this one is a
foreign language they don't understand. But of course both Western women and uncivilized natives know how actual IRL bottles work!
"Low IQ" natives aren't well-adapted to modernity and might never become adapted during their lifetime if they're forced or convinced to migrate. They're technically
retarded. They're
technically retarded. But they don't have broken brains or anything. Meanwhile, low IQ "civilized" people may not have the brainpower for empathy, as in the famous copypasta.
Similarly, a 69 IQ African won't know how to balance his checkbook and save for retirement, but he might know how to feed himself and others.
About that... a lot of Africans (disclaimer: thousands of cultures, blah blah) are notoriously bad at feeding themselves and others because of shitty cultural pressure; an African who rises above his "place in society" may get swarmed with demands for gibs from literally everyone until he's back where he started and doesn't have anything to show for his hard work.