He is correct that Catholic should not rely on untrained sources. He can only fully rely on sources that have the full authority of the Church, such as a papal encyclical, or a book with an Imprimatur or Nihil Obstat.
Of course, absolutely nothing in these controversies has any of these.
Secondarily, we might rely on men who are trained and authorized theologians of the Church, such as a Doctor of Canon Law, or Doctor of Sacred Theology.
And, I know of none living in the Traditional Catholic world. Fr. Stepanich was one such (he had two doctorates), and, as we well know, his opinion was different from what was in the video
We can, at least, be mindful of what St. Thomas Aquinas (who was no equivocator) said:
Audi alteram partem
Hear the other side
Alongside
The Sacred and the Profane, that would also include the book (ebook) at
http://www.thucbishops.com/I have both books.
P.S. Some have had this idea: Bishop Kelly could (conditionally) consecrate the worthies of this line, and thus end this controversy. After as, like Prayerful reported above "there isn't time ... when there are souls to be saved."