This is not a good article in that it misconstrues Protestantism, he writes from his experience rather than from what is true. It is also disinegenous to believe that there are not doctrinal differences/practices among local Catholic churches.
Your comment: “It is also disinegenous to believe that there are not doctrinal differences/practices among local Catholic churches.”
It is possible that some Catholics (including priests)do not fully believe or practice all doctrines of our faith. While there may be small differences (and language differences) the Sacrifice of the Mass is the same throughout the World. For example, some parishes offer the Cup while others do not. The consecrated Host contains both the Body and Blood of Christ.
There was an incident in 1257 at Regensburg, Germany at St Savior’s Chapel a priest offering the Sacrifice of the Mass wondered about the Real Presence of Jesus in the Eucharist. A hand from the altar crucifix, detached itself and removed the chalice from the hands of the priest. The priest with shock and fear, stepped back and fervently repented his doubt. It was only then that the chalice was restored to him.
However, the Catholic Church has a policy that deals with heretics or schismatics.For those who knowingly and deliberately (that is, not out of innocent ignorance) commit the sins of heresy (rejecting divinely revealed doctrine) or schism (separating from the Catholic Church and/or joining a schismatic church), no salvation would be possible until they repented and returned to live in Catholic unity.
there aren't.