Stubborn,
if you want to say that, we ought to presume, all are Catholic (in the sense of holding the Faith), including all excommunicati, because we can't possibly know, or read, their inner status, then I would agree.
If you want to, again, exploit the canonical provision from 20th century Code of Canon Law of the Latin Rite, as to demonstrate, that ALL validly baptised, with no qualification, are Catholic and members of the Church..
Or, you want to limit that to Excommunicati, even for the crime of Heresy, or those with the sin of Heresy on their soul,
then, we cannot agree.
As we know it is not the case.