If you look at USA growth vs. Western Europe, the USA does better, but not so much if you account for headcount.
As Western nations have fewer babies, there's a push for more migration, which in some places can work, not so much in others.
Europe has quite a lot of people and there are real physical limits to that growth - surely, it could all be as dense as Hong Kong but at some point, there needs be some consideration.
The West should not be trying to compete with Asia by having as many babies as them, surely.
If anything, we should maybe be trying to help tackle population explosion in some places, which can be done even with fairly non controversial methods like basic economic prosperity.
Where's the money going to come from in a non-controversial way?
But we still have a long way to go in applying technology and processes to make our lives better.
Also, as 5B poor people in the world come online and become consumers, they're going to need a lot of iPhones and eat a lot of KFC etc.
I don't think the 'warm bodies arms race' is going to end well for anyone, another perspective might be more apt.