Maybe in some places, but this definitely isn't true overall. In fact, I'd say in a lot of places, especially rural ones, it's a lot worse now. People are still having children, but there's not the jobs in those areas. Or, if they are, they're generally constantly temp jobs that don't offer much, or any, security. There's not the options for the kids that the parents had 20 years ago.

My mom just retired teaching after thirty years, having had several students of former students. She openly admits that she was worried for them because there's not the opportunities around that there once were.

Sure, you might counter, they can move...but that's not really feasible for everyone. It takes money to move, and it takes a good reason for someone to up and leave their family and support system as well as likely all the friends they've ever known, including many they've known since age 5, if not before. Moving isn't easy emotionally or materially, especially in areas where families are still somewhat close and community is still decently close. Sadly, too many people forget this point (though I'd say it likely holds true even in urban areas, to be honest)