I have been through the very same trying to have open and 2-sided discussions.
Where was the "open" portion of reptitious bible-thumping of blind faith in lieu of reasoning? Since at least two, (sometimes more people joined in at various points), participated in discussions. Therefore, two-sided, (and three-cornered and more), discussions were had until it apparently 'dawned' on several 'thumpers that blind faith cannot overcome pragmatic reasoning.
The results are always "the world according to him."
This is as opposed to 'the world according to various vague religious beliefs', eh?
That's why so many new people who come in and want to share their faith ...
If such people are 'free' to "share their faith", opposing viewpoints have an equal freedom of dissent.
Sometimes, people just want to share about what God has done for them or ask a question about an issue that pertains to God or any other type religion, etc.
This is a public forum hosted by FC which is entitled "Debate + Discussion". As such, the 'disclaimer' heading the subforum urges caution as "divisive" subjects may be contained within it. Unsubstantiated and mis-attributed claims concerning religious beliefs are open to debate & discussion, (especially in this subforum).
Many reply who can relate to their issue or question, because of knowing God, or a different religion, only to have this same other thing happen again and again.
An expectation of unquestioned religious promotions on D+D is an unreasonable one, (nor is particularly required that dissenting views be implicitly 'silenced' by religious fundamentalism). As Admin suggested previously, it's easier on the faint of heart and weak of conviction to simply use the "ignore" function and cover their eyes before they accidentally realize that they were blinded by the 'light'.