No. Pollution, likely microplastics are preventing and interfering with reproductive behaviour.
Understand, we are complex beings. The desire to reproduce is not conscious. It is innate and compulsive. And if you interfere with that hormonally derived urge, this is the result.
It's not about money. That's on the conscious side. People had scads of kids during depressions and recessions, even when the pill was available, having kids was more important than not.
And if you looka around the world, the amount of children has nothing to do with the country, or culture. Women oppressed or not, it doesn't matter.
And what culture is more unique than Japan compared to the West? It's not culture, for the entire planet has a collapse in birthrates.
We're going extinct.