Gates did make a comment that there were 6.x billion people and that was going up to 9.x billion by year xxxx. And if we did a really good job with vaccines, health services and reproductive services that might be reduced by 10-15%.
It's not clear at all why he thinks vaccines would help reduce population growth, but it could be linked to his mentioned desire to lift people out of poverty rather than a sinister plan to kill people or render them infertile through vaccines.
It was bizarre thing to say in context. A slip?
Reductions in child mortality rates can lead to parents having less children overall (as they know that the per-child odds of their children making it to adulthood have substantially increased).
That's not said to offer any endorsement of the anti-human mythology of the Warmists. Just a statistical observation.
I haven't watched the video yet, but the reason may be to convice third world parents that they don't need to have a dozen kids to almost guarantee that two or three will survive to adulthood. However the average family will have more than a couple surviving kids, thus increasing the population. Get good medical care including vaccinations and if you have three kids likely all three will grow to adults, so you no long need to have a dozen.
Yes, I think I’d give Gates the benefit of any doubt here. This man puts his money where his mouth is and looks for relatively easy, cost effective ways that save more lives than non-effective, expensive strategies. He’s very effective. I’ve read that the WHO doesn’t like him because they can’t control him and how medical dollars are spent around the world. IMHO, he shows them up big time. I believe that his wife runs the foundation.