Lazy writing: So media notice the babies killed were assigned male at birth, but not that they had the same birthdate?
No mention of that? That'd be pretty conclusive proof that something was going on beyond a bizarre coincidence. It would have been pretty obvious as well. When doing a story like that, it's the sort of background information you'd get about the victims.
That should have been obvious, but the movie makers just ignore it because I suppose it would have ended any doubt that something evil was afoot. They wouldn't have needed to convince the journalist or anyone else, everyone would've known.