Words can be tricky.
“Any Catholic who obstinately denies...”
The problem comes with the word “obstinate.” It has a meaning in ordinary language, but its meaning in terms of canon law, from what I've been told, is a little more narrow.
From what I've read of a few various canon lawyers, “obstinately” denying the faith means, in part, that one has been formally corrected, directly and personally, about a matter, by a competent spiritual/ecclesial superior (your priest, your bishop, a tribunal of the Church directed by competent ecclesial authority to make such a judgment) and that the particular superior so instructing you determines that you're holding your heretical view obstinately.
Thus, a theologian who is formally investigated by the Church, and told formally to desist from certain opinions, who does not then do so, is said to be obstinately denying the faith or holding to heresy.
I'm not saying I agree with interpreting things that way, I'm just saying, this is what I've read from some canon lawyers and at least one priest/theologian.
This fellow Mr. Conte may draw what conclusions he likes, but they are not the only way to look at the issues at hand, nor, perhaps, the most commonly-accepted way, at least by those in the Church with authority or with opinions informed by actual knowledge obtained through scholarly study.
sitetest
I like the definition of Obstinately that you put forth.
A person is warned by one kind or another of a spiritual adviser, and still persists in holding their views that abortion is OK.
Do I have it right?