Oh, I'm quite aware of that.
The speculation of perhaps God having some way of removing original sin before they die by some other means than that of baptism by water is what has been speculated on.
Or perhaps the entire doctrine needs to be reexamined.
Of course doctrine can't change, the Catholic Church simply does not have in the deposit of Faith a divine revelation on the matter.
It does have the words of the Holy Spirit that God desires all men to be saved, so one can clearly hope with good reason that somehow they will be.
Might be of interest: Point/Counterpoint Is Limbo a Catholic Doctrine?
( I didn't mean we can hope that all men will be saved, Scripture is clear they won't be)