Depends on what's causing decline. If its people not wanting kids then it's a good thing, it it's people not able to have the kids they want because Capitalism is squeezing them dry or assholes like Musk is reducing work flexibility then it's a bad thing
Nyaaah, when will people understand? No one in the rich and powerful and tech circles cares about people. We're "human resource" and always have been, one more mineral to be strip-mined until exhaustion (cf. South Korea) or obsolence (cf. echbros' AI wet dreams). Once gone or too hard to mine, the drilling ops move on to another quarry just like with minerals (offshoring).
High fertility in the West is bad because the American and European human mines are capital-intensive while the global South still has billions of units laying bare on the ground. "Pronatalism" is only about the top of pyramid and the narrow slice just below it - white, educated, well-mannered, elegant, artistically minded and creative societe who perpetuate the imaginary, self-proclaimed "western culture". Shame they are also those who are too worried to have lots of kids in this economy and climate, but oh well.
Yeah, but if you work from home, you get to spend more time with your kids. You're supposed to have children, not care about them. Just ask Elon about his kids or his own childhood.