I took you up on your challenge, pal. The website you referenced [
mostholyfamilymonastery.com/]](
http://www.mostholyfamilymonastery.com/]) is a website of a heretical group who appears to follow the heresy of Feeneyism. It is anti protestant as well as anti Catholic. Just look at some of their topics:
The heresies of Vatican II
Antipopes Benedict XVI, JPII etc.
The invalid New Mass
Feeneyism was denounced by Pope Pius XII as heretical. That is a point these Feeneyists seem to forget as they believe Pope Pius XII was a valid pope. The thing to remember is that while these are heretical Catholics they do claim to be Catholic and as such alleged Catholics they use some valid Catholic arguments to combat protestantism. In other words they did not need to reinvent the wheel to further their cause. All they need is to change their interpretation.
By the way in case no one knows what the heresy Feeneyism is about; it was proposed by a Catholic priest, a Jesuit named Leonard Feeney, who claimed that protestants could not attain heaven. It was denounced as heretical by Richard J. Cushing, Archbishop of Boston who issued a decree in 1949 which stated thusly:
"Decree Regarding Leonard Feeney, April 18, 1949
Rev. Leonard Feeney, S.J., because of grave offense against the laws of the Catholic Church has lost the right to perform any priestly function, including preaching and teaching of religion.
Any Catholics who frequent St. Benedict’s Center, or who in any way take part in or assist its activities forfeit the right to receive the Sacrament of Penance and Holy Eucharist.
Given at Boston on the 18th day of April, 1949."
In 1953 Pope Pius XII issued the confirmation decree:
"Decree Excommunicating Leonard Feeney, 13 February 1953
Prior to the excommunication, Feeney received the following summons to appear before the Holy Office from Cardinal Pizzardo on November 22, 1952.
The Holy Office has been obliged repeatedly to make your teaching and conduct in the Church the object of its special care and attention, and recently, after having again carefully examined and calmly weighed all the evidence collected in your cause, it has found it necessary to bring this question to a conclusion.
DECREE
THE PRIEST LEONARD FEENEY IS DECLARED EXCOMMUNICATED
Since the priest Leonard Feeney, a resident of Boston (Saint Benedict Center), who for a long time has been suspended a divinis for grave disobedience toward church authority, has not, despite repeated warnings and threats of incurring excommunication ipso facto, come to his senses, the Most Eminent and Reverend Fathers, charged with safeguarding matters of faith and morals, have, in a Plenary Session held on Wednesday 4 February 1953, declared him excommunicated with all the effects of the law.
On Thursday, 12 February 1953, our Most Holy Lord Pius XII, by Divine Providence Pope, approved and confirmed the decree of the Most Eminent Fathers, and ordered that it be made a matter of public law."
If you are a follower of this group you have incurred an automatic excommunication also.