“and Catholicism provides the only true path to salvation”
Funny, I always thought Jesus was the only WAY to the Father. Silly me reading this silly book.
Catholics believe the Catholic Church is founded and currently led by Jesus Christ.
Therefore Catholics believe it's not a good idea to tell Jesus His Church doesn't matter and is in fact wrong, and that His Church isn't really His, if one wants to go to Heaven.
Obviously a non-Catholic would not normally share those concerns.