That is a huge WOW!....and evidences they don't understand the scriptures...which would indicate they don't know Christ Jesus either as Salvation itself is based on His finished work.....but moreso how can they then understand the “Book of Life” ? They are so off base that their very salvation is at a mighty risk....only the Lord can remove that veil and as long as they see Catholicism as the means to their salvation then likely most are indeed lost.
"The non-Catholic is not part of Christ’s Mystical Body, which is coterminous with the Catholic Church, whose dogmas, morals, and priorities are those of her Mystical Head, the Second Person of the Holy Trinity. We learn them from Scripture and Tradition as authoritatively proclaimed by an infallible magisterium. By the very fact that a non-Catholic is a non-Catholic, he is not possessed of this sacred deposit of faith. He therefore lacks the proper supernatural outlook on reality. It is good when he agrees with us, but it is not enough; agreeing with God on one or two points is not sufficient. In charity, we must labor to help our non-Catholic friend agree with God on all points."
The Real Gospel of Life