Traditional theologians, especially Thomistic theologians, bowler, know well and have written that infants are incapable of desire, which we are talking about here. However, the extraordinary means of baptism of blood for infants is proven definitively even from the liturgical Tradition of the early Church, and those matters contained in Tradition, just as those in Scripture, demand an assent of faith, as we are taught in the First Vatican Council, for the Holy Innocents are true martyrs.
Dimond is simply wrong about Trent. St.Alphonsus of course is right about it. Trent does teach baptism of desire as truly and as much as it teaches the necessity of baptism. At least I think you could admit the better authorities are on my side, but in any case, hold your horses, we'll come to all that.
Maybe because:
the "just man sins seven times a day", and would perpetually be outside of the Holy Catholic Church.
Well, that passage is talking about venial sins, which do not altogether destroy the light of grace in the Christian soul but only in a certain sense diminish its brightness. Even ordinary mortal sins of course do not put Catholics "outside the Holy Catholic Church", but okay, this is the sort of answer I was hoping for.
St.Thomas' answer is that God manifests His power, Providence and excellence by showing He has no absolute need of human beings or elements of His creation to give His grace.
Now, do you accept that
1. By believing in an extraordinary means of penance, you are not denying God's Providence or predestination? You accept that God could provide a priest for every Catholic, especially Catholics in peril of losing of their souls if He had so chosen, merely that He has not chosen it?
2. That the sacrament of penance being necessary for salvation for those Catholics who have fallen into mortal sin does not contradict perfect contrition being sufficient to recover grace even before the entrance into the confessional, because the desire for the sacrament is implicit in the act of perfect contrition, since it includes the resolve to do all that God requires?
3. That the need to confess all our sins explicitly in number and kind can be dispensed by God, with a mere implicit remorse for all our sins being sufficient provided we are ready to confess all our sins when we remember them and have the right disposition for Him to move the will to perfect contrition?
If you answer yes to all the above, then, can you not see the parallels with baptism of desire, and therefore that the arguments you have made do not hold? If no, or if you answer no to any of the above, we'll take it from there.
Even the sacrament of penance before a priest, is a sacrament that is used by Catholics thousands of times in a lifetime. That is not the case with baptism, which is only done once.
Which only proves that baptism is all the more universally necessary, and works against you, since it would stand to reason that if God provides extraordinary means for the sacrament that is less uniquely and universally necessary, He would do so for what is more.
Remember, your own argument works against you here if you claim God could not provide a priest to every Catholic in mortal sin. That would severely undercut your earlier argument about Providence and predestination. However, I have never claimed the similar thing about baptism.