I disagree with that. This thread was about how a Protestant minister (?) questions whether Francis is Catholic. The fact that a Protestant questions this is why ebb couldn't post it as a Catholic Caucus. But, essentially, this thread was more about Francis than non-Catholics in general.
ebb has been calling Francis a Prot for some time now.
He just happened to find a convenient article to post about it. So regardless of whether the author questions the pope being a Catholics, it could easily be seen as useful ammo in Prot bashing.