And that taboo is probably rooted in evolutionary psychology, people have a genetically driven tendency to criticize those who advocate having less children? So could there be an instinctual drive behind it?
https://www.flashpack.com/solo/relationships/dont-want-kids-...
people aren't willing to stop paying for conveniences because they're cheaply available, corporations aren't willing to stop selling them because there's a demand for it and money to be made, and governments aren't willing to force anybody's hand because the people and corporations will both force them out of power if they try.
there is absolutely no chance of breaking out of it other than giving up on democracy, but that will only happen when modern society collapses entirely, which will be far too late to prevent unimaginable suffering on a massive scale.
And the leader should be who? Of course you, because only you know the solution! Cheeky ;)