Someone didn't do their job.
But it really isn't a surprise those responsible are now in CYA and finger pointing mode.
It makes sense, IMO - agriculture meant that this particular group became dominant and thus contributed disproportionately more to the gene pool in a relatively short time.
That's one possibility. Another is that raiding parties captured and raped their women. That worked pretty well for Genghis Khan.
Why populate those areas? If you don't want population control you will need to warehouse people as efficiently as possible.
Manufacturing can be done in highly concentrated locations (China is showing us how). Agriculture doesn't require very many people anymore, same with mining and forestry. Cities are the only way to deal with hoards of people.
Plus you're still just kicking the can down the road a few decades. Eleven billion? What happens when that doubles in another few decades, then doubles again? It can't go on forever.
If they have to word the claim to actually claim something innovative instead of just a way of implementing a solution to a requirement that anyone can come up with they're in trouble.
Those who can, do; those who can't, write. Those who can't write work for the Bell Labs Record.