Perhaps you should find a Catholic forum on which to post your private discussions. In the meantime, try to come to grips with the fact that every thread on FR is open to every registered member.
Go practice your pompous "MYOB" line on someone under your thumb.
I have also said that the Catholic response is not to indulge the impertinent buttinskis in the "Biblical" debating society that they soooooo crave as though the Bible were the only source of religious authority (when you don't have a pope or even a priesthood, I suppose you have to settle for what you can get on the cheap: a book and some reading lessons and the presumption that you are some sort of religious authority therefore) but to remind them to mind their own business which is the business of their own churches and NOT the business of the Roman Catholic Church to which they do NOT belong OR MYOB, for short. Didn't your mother each you any manners?????
Catholic or not, people also do not need your advice on how to arrange their underwear drawers, how to make love to one's heterosexual spouse or which sort of steak sauce to use on Monday. You would really be amazed at how few of your notions and interventions are needed by Catholics to live their lives and conduct their own Church activities.
To summarize, I will post on Catholic threads because I belong on them. Normally, I will not post on church lady nanny-nagging threads because they do not rise to a level of deserving notice. After all, I am a Catholic and therefore religiously need nothing from the likes of you by way of advice. You will post there, if at all, because you just cannot resist being a rude and nosey buttinski with presumptions of religious competence with which to annoy the members of Jesus Christ's own Church and in spite of the fact that you have been told by the targets of your ignorance and bad manners to mind your own business. We are free to express contempt for your efforts because we sure as, ummmmm, heck aren't going to be impressed by Joe Freelance "Biblical" Buttinski in lieu of Benedict XVI or John Paul II or John Paul I, etc., all the way back to Peter the Apostle and through him to Jesus Christ. You have nothing, zero, zip, nada to stand on and are utterly irrelevant to any conversation as to the Roman Catholic Church, whatever you may please yourself to imagine.
Go buddy up to Jack Chick, and Lorraine Boettner and the rest of your ilk and soak your respective heads.
Hey, we Catholics have survived a lot worse annoyances than the likes of you and will continue to do so. In fact, the Founder guaranteed that we would and that He would be with us to the end. We are the standard and you are the Luther-come-lately deviations. When we need to hear from you, we will be sure to ask but, ummmmm, don't hold your breath waiting for that call.