You can’t read too much into that.
You shouldn’t read
too little into that, either.
The title “Saint” is also used as an honorific, such as St. Michael and St. Gabriel.
With all due respect, that’s a bad analogy. The Church has always used the appellation “holy ones” or “saints” – that is, part of the Body of Christ – to refer to humans who are associated with the Church (either on earth, in purgatory, or in heaven). In an analogous way, she has also referred to angels as ‘saints’, even though their participation in the Body of Christ differs in a particularly and fundamentally different way. For angels, the appellation ‘saint’ may be considered an ‘honorific’.
For a human person, though, the title ‘saint’ is not an honorific – it speaks to a particular objective reality: that is, the reality that they are a member of the Body of Christ on earth or in heaven. To suggest that the patriarchs – in a particular way, Moses and Elijah, who appeared astride Christ in the Transfiguration event; or Abraham, who Christ himself portrays as being in a ‘paradise’ in a parable – are not members of the Body of Christ in heaven… well, that’s just ludicrous.
The inclusion of these human persons, in a litany in which all the human persons mentioned as ‘saints’ are people who the Church asserts are in heaven, is suspect at best, and misleading at worst.
The Church does not teach that angels (or OT patriarchs) are (or are not) members of the mystical Body of Christ.
I would think that it’s more than reasonable to assert that, by including the patriarchs in a litany – which is expected to be used in public, liturgical situations – is ample evidence that they are considered to be members of the mystical Body of Christ.
