Thank you.
Perhaps you didn’t see this above:
What about this situation:
Mr. Z is known claim no label at all regarding his own religion, but has a habit of critiquing other religions .
Mr. Z replies to Mr. X (an adherent of Religion X) by posting “Religion X sucks canal water” or “Religion X is of the devil” or “Religion X is filled with malingerers and criminals” or “People of Religion X love sin” or some other derogatory remark.
Mr. X replies to Mr. Z “Your religion also sucks canal water” (etc.)
_________
Please explain how the RF rules apply to that scenario.
Theology (literally: “The study of G-d”), was invented because no human being is capable of understanding the true meaning of G-d. So, all the theological arguments are meaningless guesswork.