Last night a friend, Br Tony Jukes SSS, posted a comment on a recent post here with a link to a Youtube video put up by the schismatic Holy Family Monastery in the USA. You can go to that post if you want to find the link to the video in question. Its title gives you all you need to now about its stance: Why the New Mass and the New Rite of Ordination are Invalid.
After an awful night of hayfever–ruined sleep, I have managed to have a little look at that video this morning. Its narrator, Br Dimond, and his community, I stumbled upon some years back. I do not wish to doubt his sincerity, but I do doubt his theology and understanding of how the Church works.