I will offer a couple of comments.
- Correlation is not causation. Some of the things which correlate may be partial causes, or may be impacted by other issues which are not examined.
- It appears that the primary emphasis of the study is to “show” (I would prefer the term “imply”) that liturgical change is the driving cause of the loss of vocations.
- The following quote appears below a study showing the increase in the SSPX from 1970 forward: “Given the depth of the current crisis, described visually in so many of the previous figures, it is inconsistent
for any prelate or cleric concerned for the good of the Church or the salvation of souls to simultaneously hold
a determined resistance to cooperation with a society of religious life whose only fault is lack of canonical
status within the Church. The statistics herein seem to validate the basis on which they were founded in 1970.”
That, I think, may be a telltale. according to Pope Benedict, “the only fault is a lack of canonical status” is a complete misrepresentation of the distance between the SSPX and the Church. And if anyone should know intimately the distance between the SSPX and the Church, it is this Pope, who while working under Pope John Paul 2, was the go between of the Society and the Pope. In short, he was in the trenches during JP2’s reign, trying to bring about reconciliation.
Neither seem to have any indicated background in sociological study. Although the mention CARA briefly (for a source of statistics), CARA would never start with a presupposed cause, and simply run through numbers to imply that correlation is causation.
There are a multitude of issues at play. Not mentioned, for example, was the correlation of the sexual revolution, at least in the US, and what part that might have played in priests and religious leaving their vocation. Nor are the twin issues of priests leaving to get married, and priests leaving because of sexual abuse issues addressed. There are no questionnaires, nor are there any references to other studies which may have had questionnaires, nor any studies, notes, or other materials which any of the groups noted may have had, all together or sporadically as to those requesting release. Given that at least in some circumstances Rome may have been involved in the release from vows, there is no showing either of any information, or even that Rome was involved (in other words, source materials). It may be that such materials are confidential, but even abstracts might possibly be available.
I wouldn’t be surprised if there could be shown a correlation between the Vietnam War and the decline of religious. To which I might be inclined to say “So?”