Wikipedia isn’t the catechism. Ex Cathedra means nothing more than from the office. Even if I accede to your definition (I don’t) under your usage, he can never speak Ex Cathedra concerning the doctrine or morals of another religion.
RE: Even if I accede to your definition (I don’t) under your usage, he can never speak Ex Cathedra concerning the doctrine or morals of another religion.
Let’s put it this way -— we disagree on the understanding of the term ex-cathedra. I understand it as IMPLICITLY referring to the Pope’s speaking about CATHOLIC morals and doctrine. Which is to say, when spoken in reference to the Pope, we KNOW what it means and what it refers to.
Regarding the doctrine of other religions, it goes without saying that he can’t speak for what other people believe.