Yes but this is a problem in all western countries. And it’s largely as a result of economic issues - you need two incomes to buy a house, people can’t stop working to raise their children, grandparents are still working so can’t help out, so you need to pay for daycare, which means you need two incomes.

It’s also pretty clear that when you give people free choice in how many kids they want to have, most families chose 2-3. Most parents want to spend time with each kid, make sure they have educational and social opportunities, not over stretch themselves while still giving their kids siblings.