this is an assertion that needs the evidence presented in order to judge the reliability of the assertion.
As a consumer of the article the weakness is on taking this assertion uncritically and not asking for evidence of what is asserted.
I am actually answering Buddy1’s obscure “Deemed inappropriate?” Your remarks give me better access to the issues.
In an academic setting, every assertion of fact should be supported by evidence. There are rules about what evidence is appropriate, when it is right to cite an authority’s opinion, etc.That is what you are asking for, and I and others would be happy to discuss some of that.
There are other times when such documentation is a distraction. If your mother tells you “Be nice” do you discuss moral imperatives with her, or ask about behavioralist philosophies? Those are probably inappropriate responses, depending on your mother.
This is not an academic article. If it were, it would have evidence that would allow you to judge each individual statement. They are not asking you to critique their ideas.
The authority behind this document is the Catholic Jewish Conference, not the evidence for each statement. It is intended to support a reader so that they can better understand the gospels. It does not give every controversy on every issue presented, as an academic paper might. Instead it gives you the opinion of this Conference, or the members who wrote it. They expect you to trust them so that you might be able to read the Gospels without 15 years of academic preparation. Adding the critical academic information might be nice for some people, but others would get distracted and discouraged and give up on reading the Gospels altogether. So they deemed it inappropriate to include the needed footnotes.
The consumer of this article is expected to take most assertions uncritically, relying on the writers, the organization, and the sponsoring bodies. Probably you should keep in mind that they are the authority, and they can be wrong. But they are offering a vision of the gospels that goes beyond a collection of details, and they are expressing these ideas in the context of church and synagogue.