As I said in the other thread where you posted this, it’s a bad article.
The Church makes no definitive judgment because that would involve judging particular souls. Likewise, God has the power to sanctify souls apart from the sacraments as the famous saying of St. Thomas Aquinas goes: God has bound salvation to the sacrament of baptism, but He himself is not bound by Sacraments.
In answer to those who said the sin of Adam was greater than the salvation of Christ since original sin affects all men, but Baptism does not reach all, such as those in the womb, St. Thomas said:
newadvent.org/summa/4068.htm#article11
Examples of this happening in Scripture are St. John the Baptist and the Prophet Jeremiah. We can’t say for certain that it happens other times, but we also cannot say for certain that it doesn’t.
The Church has also permitted other ideas as well. St. Bernard, for example, taught that the vicarious faith and desire of the parents or Church could suffice, just as how their vicarious faith suffices for an actual baptism of an infant.
If the soul is not cleansed of original sin, and baptism is the ordinary means of this, then the soul cannot be saved. Limbo is the state of damnation where one is deprived of the beatific vision (the consequence of original sin) but does not receive actual torments (the consequence of actual sins committed).