This doesn't really track. People still get pregnant accidentally all the time. And people also still decide to have babies on purpose if they meet someone they like. Social media may be screwing up the latter process somewhat and getting rid of it could improve birth rates.

Birth Control isn't the whole problem. I would argue its not part of the problem at all - if people are choosing to not have kids, you don't have a birth control problem, you have a society problem. Unless you just think more human agency is bad? Seems like a weird take to me.