All you have to do, is name one circuмstance in which God is unable, unwilling, cannot or otherwise will not provide the actual sacrament for the sincere catechumen who is in the state of justification and who is about to die.
Don't shirk the answer I already gave you. The Church's laws are God speaking to us, and God says that the dead catechumen should have a Requiem Mass said for his soul, in case he went to purgatory. Which means that God WILL NOT always prevent the death of a catechumen just because he was in the state of grace already.
If you condemn that law, you commit blasphemy by saying the Church has done something in vain:
"it would be blasphemy to say that the Church does anything in vain" - St. Thomas Aquinas
Don't avoid the question, simply name one circuмstance, that is all I ask.
Because you believe the Church teaches a BOD, you only prove that you have no idea what the Church teaches.
Let us start with these principles - and these must never be out of our minds no matter what the prevailing sentiments or mood of society is, no matter where one is, one must always be convinced of these principles.
The first of which is almighty God is a main participant in all things that happen no matter how invisible or imperceptible. Almighty God is active in the lives of all individuals at all times and He is a participant in the events that occur. From our point of view, things may seem to be accidental or coincidental or altogether unpredictable, but God, despite all appearances, is the Master of His world, He has His hand in all things.
Further, all that He does, the reason why He is such a participant is that He has in mind the salvation of souls. That is why he created each one of us, His chief motive and all that He does has as the chief purpose to save souls. And in the life of each one of us, we must be convinced that God is always active and His activities no matter how altogether imperceptible or deniable or questionable or seemingly unreasonable, are for our salvation.
His activity has to do with converting us to Himself for our salvation sake. We have to accept this even if the world has turned totally pagan and even if we may turn away from Him and give Him no regard. Even if we or anyone else is totally unscrupulous, totally unconcerned about one soul, almighty God is never unconcerned and never inactive with regard to the salvation of souls. This is HIs total concern comparatively speaking.
We go about our lives mostly doing day to day things without a thought about God's providence, but if God were to do the same and simply let the world run on auto-pilot as all BODers apparently believe, then in an instant this world would cease to be.
After all God does at every moment in time and after all He provides aimed at the salvation of everyone He created, to promote the lie that He does not provide the sacrament to one who sincerely desires it before they die is a very serious insult directly against God. You can trust that when you stand before Him in your particular judgement, that He will judge you justly for the insults you promote against Him and His Divine Providence.