Why are y'all surprised?
Those in power have seen for years the population decline because of Birth Control and Abortions which will directly lead to the collapse of the society in the future.
That is why.
Every modern society of it's time had the same common precursor before they failed... population decline and stats are showing the USA is trending that way and they are freaking out about it.
Except these draconian laws are counter productive. Instead what we'll see are higher death rates during pregancies for mothers, in addition to a litany of other issues.
The reason why millenials and zoomers aren't settling and having families has nothing to do with their access to abortion, and has everything to do with their economic uncertainty. There's a problem when corportations are having record breaking profits, but middle and working class people feel stuck with their gig job, or struggling to make ends meet on $15/hr. Add to the fact that healthcare and childcare costs are astromical... it's no surprise that people are more hesitant to start a family than they were in the past.