Is there anyone here who would like to reasonably discuss the Popes message in it's entirety?
Calvinists don't share communion with apostates. As a matter of our Creedal Confessions, Calvinist denominations are prohibited by Covenant from sharing communion with apostates.
So you're not doing us any favors by pledging not to accuse any who identify themselves as "Calvinists" of spiritual fornication if you have a Biblically valid reason to believe that they are so doing. Gosh, if someone calling themselves a "calvinist" were involved in spiritual harlotry, we want you to tell us about it. We have a duty either to reprove and correct them, or, if they be stiff-necked, to "separate ourselves from the unfruitful works of darkness". It's Bible, dude; so as Calvinists, it's our Law, y'know?
Why do you think I am Orthodox Presbyterian and not PC-USA (mainstream presbyterian)?
Balaam was alerted to Error by the mouth of an ass. And I'll be the first to admit that some Roman Catholics do possess more spiritual discernment then your typical ass!! If a thoughtful Roman Catholic had Biblically valid reason to believe that one calling himself "calvinist" were involved in spiritual prostitution, I'd hear the criticism in all charity (God willing).
As an example, you could tell me to my face that you thought that J.I. Packer -- often regarded as one of the more prestigious modern Calvinist divines -- was acting like a spiritual whore in his dealings with ECT, and I would acknowledge the charge and admit that your criticism has some ground.