My experience mostly comes from moderating queer friendly communities with a low amount of anonymity. If you have a community with a high instance of trauma surrounding being cast out of your family, abused directly or placed in the abusive situation of conversion therapy then let someone use that space to proselytize Christianity positivly it tends to make that place unsafe because you can actually cause flashbacks in the standing community and eventually in the interest of protecting the right of one person to say whatever they the rest of the community stops being able to speak freely without having to explain themselves and have to tiptoe around the one person who makes any instance of them venting their reasonble frustrations with their situation about how "not every Christian… ". People sometimes need places to let off steam.
Often people in threatened minorities need protected spaces where they don’t need to follow the rules that are more universally applied where they don’t feel they have to appease the sensibilities that are enforced on them the minute they step outside. Very few spaces are actually welcome to everyone and the ones that use an anything goes moderation policy usually find themselves hosting some damn near criminal elements who drive off others and rot the place.
Since conservative spaces tend to be somewhat hegemonic people from those spaces often hold feelings that if they are not welcome to say whatever they want anywhere they choose that any request to modify their behaviour with respect to the needs of others in the space is intolerable oppression. Every space has to chose on a sliding scale how much they are willing to put up with if one participant starts causing everyone to enjoy the space less though the decision in my experience is often a matter of long debate per individual about how willing to learn and accept that the value lies with the more vulnerable audience who have fewer venues to not have to deal with being spammed with rhetoric that paints them as deviant, dangerous, mentally ill or inferior.
Halfway spaces in our forums are made available for people who cannot be trusted to play by the stricter ruleset of conscientious behaviour where one can expect to be more rough and tumble but a lot of the time that becomes a space to debunk a lot of the bullshit and places the burden on our queer membership to be educators as oftentimes people who can’t be trusted use the dedicated spaces to whine and complain about how they should have the all access pass and when they inferred everyone in the space was a pedophile they didn’t actually know what they were doing so it wasn’t like they were trying to hurt everyone etc etc etc…