I don't believe that there is any honest or fair attempt to present legitimate and actual Catholic dogma by the anti-Catholic so called "Bible-believing Christians" who troll these threads. When not posting content from loony and forbidden sites, imaginary conversations, and fabricated anecdotes from former or failed Catholics, the actual words of the Catechism, encyclicals and writings are presented either out of context or with deliberately fabricated definitions that completely shift their meanings. When these errors are pointed out over and over and over again the response is ignored, the proof is scoffed at as some sort of Roman conspiracy, and the original lies repeated again and again and again.
Fortunately the assault is not unlike and no more effective than an ant climbing the hind leg of an elephant with rape on its mind.
And we post the Scriptures.
It's not our fault if the word of God contradicts what Rome believes in black and white. Nor is it our fault if Roman Catholics can't defend their faith from Scripture.
That fact alone should tell them something.
Pray for ears to hear.