I put your take, the encyclical, JCL's blog post, my tweet into Claude and here was its reaction FWIW:
"Reading the actual text against both interpretations, I think you're closer to right than Dean, but his reading has more force than the response acknowledges, and the honest answer involves real ambiguity.
Dean's strongest point: paragraph 99's language genuinely is unqualified. "Do not undergo experiences, do not possess a body, do not feel joy or pain… do not have a moral conscience… do not understand what they produce." There's no "current systems" hedge in the operative sentences. If the Church wanted to leave the door visibly ajar, the easy move was a single qualifier — "today's systems," "as currently designed" — and that move was conspicuously not made. Combined with the metaphysical-sounding grounds ("they lack the affective, relational and spiritual perspective"), the surface text reads like a categorical claim about what AI is, not a status report on GPT-5.
That said, four things push me toward your reading:
First, the grounds given are a mix. "Do not possess a body" and "do not mature through relationships" are not in-principle impossibilities — embodied systems exist, and "maturing through relationships" is a description, not a metaphysical barrier. The categorical-sounding bits ("spiritual perspective") sit alongside contingent-sounding bits. If the Pope wanted a clean Thomistic case — only rational souls directly created by God can have inner life, full stop — that case is available in the tradition and he didn't make it. He chose mixed, somewhat empirical grounds, which is a meaningful choice.
Second, the meta-text matters. Paragraph 97 explicitly limits scope: "I limit myself to recalling a few essential elements for a moral and social discernment." Paragraph 98 frames current systems as "cultivated" rather than "built," with their internal workings unknown — an open epistemic posture. The encyclical also flags that "any statement regarding AI risks becoming quickly outdated." This is not the register of a Church closing a question; it's the register of a Church reserving the right to revise.
Third, the dog that didn't bark. The Vatican has a well-established machinery for closing theological questions — dogmatic definitions, conciliar statements, CDF declarations. None of that was used. An encyclical is magisterial but not the genre you reach for to settle whether a class of entities can have inner experience. And as Levin notes, Antiqua et Nova a year earlier engaged the consciousness question more directly and was also hedged; the trajectory is toward "needs further study," not toward closure.
Fourth, the launch staging. If Czerny really said in pre-approved remarks that this "deserves attention and further study," and Olah was platformed to advance a "AI consciousness is a live concern" view without contradiction — that's the Church telegraphing where it actually is, more reliably than parsing individual paragraphs. Vatican communications don't accidentally let key advisors freelance on doctrinally settled questions in front of the Pope.
So I'd put it this way: the surface text leans Dean's direction, but the structural choices — what genre, what advisors, what was conspicuously not said, what was endorsed at launch — all lean your direction. The Church is making the strongest claim it can comfortably make about current systems while declining to bind future judgment. That's not the same as "open-minded" in the way an AI researcher would mean it; the underlying Thomistic anthropology probably does think machine consciousness is impossible. But they're deliberately not cashing that out into doctrine, and the gap between "what we suspect" and "what we'll define" is exactly the space you can work in.
One thing worth flagging if this becomes a longer back-and-forth with Dean: he's not crazy to read it categorically, and the response that just asserts "no it's clearly open" without engaging the actual language risks looking like motivated reading. The stronger move is to concede that the text sounds categorical, then point to the genre, the structural choices, and the launch context as evidence the Church is being more careful than the prose suggests. That's harder to dismiss."