Our duty as Catholics is only to admonish and correct the deniers of Baptism of Desire and Baptism of Blood, EENS not to engage them in debate.
Those that have fallen into this heresy need our admonition, not debate. It is a great work of charity to show them their heresy and urge them to recant, but we must remember that they are publicly professing heresy, and we have a duty to report them to the Church authorities once we are able to protect the innocent of Christ's flock from their heresies.
Agreed with all the words above but instead of Baptism of Desire, the deniers of the Extra Ecclesiam Nulla Salus salutary dogma are the ones in need of prompt admonition and charitable correction.
Baptism of Desire and EENS are both the teaching of the Church, and have been taught side by side with force for the last 1,000 years.
Both must be believed. The denial of either of them is heresy.