apushatayid,
Bas ploni, liploni. Nobody was passed over. Everyone born, has a shidduch.
Do you know the source in the gemara for “Bas ploni, liploni”? Look at Tosafos there.
Besides, where does it say that bas kol was for everyone, maybe it was just for those who have a “bas ploni” designated, but some don’t.
If, lo aleinu, a young child is niftar, was there a bas kol for that child?