I can tell you first hand that I have gone to SSPX, CMRI and independent chapels for decades.
At every one of these chapels, proponents of this heresy were actively trying to convert Catholics with their Feeneyite and Dimond tracts and videos.
In many cases, they succeeded, and Catholics were deceived out of their Faith.
SSPX, CMRI, and independent priests all have given sermons against these heretics. The strongest sermon I ever heard was from my SSPX priest in the 1990's who devoted an entire sermon to warning Catholics about Fr. Feeney and the errors of the Saint Benedict Center.
I have friends and others that I know that have been brought into the Dimond sect, and now no longer go to mass, and have broken communion with Catholics.
I have watched ordinary, kind, decent Catholics get infected with these sectarians doctrines, and they change from kind hearted souls to belligerent, aggressive, arrogant jerks.
A warning to everyone on this forum: avoid these sectarians like the plague, do not read their tracts, do not watch their videos, or listen to their online "missionaries." They are very aggressive and almost all of them are armed with tracts and literature.
Not to long ago, one of their "missionaries" was caught proselytizing at my chapel, and this is no isolated incident, it goes on all over, ask any SSPX or CMRI priest if you don't believe me.
They will confuse you, and they are good at twisting Catholic texts.
The fact is that the Catholic Church teaches Baptism of Desire and Blood.
This teaching has been taught by the Church by:
The Council of Trent,
The Catechism of the Council of Trent (St. Pius V),
Many Popes,
The Holy Office,
St. Thomas Aquinas,
St. Bernard of Clairvoux,
St. Bonaventure,
St. Catherine of Sienna (in her dialogues with God),
St. Robert Bellarmine,
St. Alphonus Liguori,
St. Pius X,
Pope Pius XII,
The Code of Canon Law,
All Dogmatic Theologians in the last millennium,
Dozens of approved Pre Vatican II Catechism,
All approved Catholic books published in the last 1,000 years,
And the list can go on.
Do not be tricked by sophistries out of your Catholic Faith.