Notice, they don’t attack the Methodists or the Baptists or even the liberal churches who fail to try to protect God’s Word and actually teach immorality. It is Catholics and they attack us for the same reason that atheists attack Christianity because God and the Catholic Church aren’t made in their own image/opinion.
Actually, it is the liberal churches that Rome is overall most akin to, vs. evangelicals , and the liberal Prot churches are typically closest to Rome.
Note that it is not official professions that define what a person or entity believes, but what they overall do and effect. (Mt. 7:20; Ja, 2:18)
And which is seen by Rome treating liberals as members in life and in death, even in the case of notorious impenitent proabortion prosodomy public figures. This is their church effectually testifying to what it overall believes in this regard, and thus they must own them due to your their boast of their true church identity.
Jealousy!