So, I guess you also deny the possibility of having sins forgiven through an act of perfect contrition, don’t you? After all, if we can have our sins forgiven by making a supernatural act of perfect contrition, why the need for the sacrament of confession? Based on your reasoning, this would make the sacrament frivilous.
Just as it is possible to have sins forgiven by an act of perfect contrition (and no one denies that - not even the Dimond Brothers), so too is it possible to obtain the state of grace via baptism of desire, if the actual reception of the sacrament is not possible for whatever reason.
**Pope Pius XII: **“In the case of other sacraments, when the minister is lacking, he can be supplied through the force of divine mercy, which will forego even external signs [the intermediate cause] in order to bring grace to the heart. To the catechumen who has no one to pour water in his head, to the sinner who can find no one to absolve him, a loving God will accord, out of the desire of love, the grace whicc makes them His friends and children even without Baptism or actulal confession” (Dear Newlyweds, pg 13).
Keep in mind that if St. Alphonsus was right and baptism of desire is de fide, you can go to confession all you want but none of your sins are being forgiven. Why? Because if he was correct, you are in willful denial of a de fide dogma, which makes you a formal heretic - and heretics don’t receive pardon for their sins until they renounce their error.
But maybe St. Alphonsus, the Doctor of the Church, was wrong? I guess you will find out on judgment day - possibly the hard way.
Since St. Alphonsus, St. Augustine, St. Robert Bellarmine, St. Thomas (and others) were all declared a Doctors of the Church while affirming belief in Baptism of Desire, those who us who believe in Baptism of Desire have nothing to worry about. While those who deny it have much to worry about.