The Catholics can stick up for themselves, no doubt, and if this thread lasts for any length of time, you'll deserve what you get from them.
Don't strain too hard. That the Roman Catholic Church is an apostate group is a position held by the Reformed for centuries. The pretty much hold the same view of us. They pretty much stay out of our threads as we pretty much stay out of theirs.
So, let the Catholics 'stick up for themselves' if they feel it necessary, but I doubt most of them feel threatened by this article.
Frankly, I'd feel slighted if a Calvinist author didn't take the time to knock "Romanist's" in some manner.