If they are so right why can't they word it as it is instead of putting a spin on it or avoiding the "negative" realistic aspect of their false teaching?
That people who die in original sin only and without the Catholic Faith is a false teaching you say?
You question on its face does not make sense. But I will try to guess what you are trying to say.
It is correct that anyone who dies with Original sin on his soul will be deprived of the Beatific Vision. There are no exceptions to this. But the second and third form of the one baptism (BOB/D) can cleanse the soul of Original Sin.
It is true that "desire" and or "invincible ignorance" by themselves save no one. One must have a supernatural faith for salvation to be possible. Actual graces, such as the grace to know by God's revelation that there is a God who both rewards good and punishes evil (and the Holy Trinity and Incarnation)is the gift of faith. If one dies without the theological virtue of faith he is deprived of the Beatific Vision no matter how much he desires to enter the Church, even if he is within the Church as a non-member.
Does that answer the question you were trying to ask?