It may be "interesting," but it is not an accurate description of traditionalist Catholics or their beliefs. He seems to be ignorant of the fact that there are many traditional Catholics who have not separated themselves from the Church. He even contradicts himself when, in the main body of his paper, he states, "Though the [traditional] movement is diverse...", "It is also a mistake to assume that all traditionalists are the same and their concerns are the same. They are a broad, ideologically-divided group...", and "The most radicalized ... adhere to a bizarre doctrine of sede-vacantism," but then in his summary paints all traditionalists as sedevacantists.
He appears to have read all of the mainstream media accounts of traditional Catholicism without having done any original research into the history of the Church. For example, the article claims that " ...the Latin Mass authorized by and in use since the sixteenth-century Council of Trent." The traditional Latin Mass existed long before the Council of Trent. The Council standardized several rites that existed at the time which were slightly different from each other.
There are many more inaccuracies in this paper. I have flagged some FReepers who can explain them better than I.
I'll excerpt here
(1) In Hawaii in May 1991 Bishop Ferrario decided to excommunicate some followers of the Society of St.Pius X for supporting the Society and attending its Masses. Rome declared that the decision "lacks foundation and hence validity". The excommunication was overturned by Cardinal Joseph Ratzinger, the Prefect of the Congregation for the Doctrine of the Faith, on June 28, 1993. "From the examination of the case, conducted on the basis of the Law of the Church, it did not result that the facts referred to in the above-mentioned Decreee, are formal schismatic acts in the strict sense, as they do not constitute the offence of schism; and therefore the Congregation holds that the Decree of May 1, 1991, lacks foundation and hence validity" (Apostolic Nunciature, Washington DC) (2) Extract from a reply written on May 3,1994 by Cardinal Edward Casssidy, President of the Pontifical Council for Christian Unity,to an inquiry about the status of the Society of St.Pius X "... Regarding your inquiry (March 25, 1994) I would point out at once that the Directory on Ecumenism is not concerned with the Society of St. Pius X. The situation of the members of this Society is an internal matter of the Catholic Church. The Society is not another Church or Ecclesial Community in the meaning used in the Directory. Of course the Mass and Sacraments administered by the priests of the Society are valid. The Bishops are validly, but not lawfully, consecrated.... I hope this answers your letter satisfactorily."
Hope that helps.
Furthermore, by these presents [this law], in virtue of Our Apostolic authority, We grant and concede in perpetuity that, for the chanting or reading of the Mass in any church whatsoever, this Missal is hereafter to be followed absolutely, without any scruple of conscience or fear of incurring any penalty, judgment, or censure, and may freely and lawfully be used.