Perhaps the rest of the community should withdraw from the website as well, and delete all the content before they go.
We're a small enough community that I doubt the admins will care if we leave. However, the Civ II community "leaving" might very well mean "disbanding" instead. At the very least, new/returning people will be much less likely to find us. And copying/deleting all the accumulated useful content would be a massive job that I doubt very much will happen. So, we would still be dependent on this site for archive purposes, but with barely any new activity. Giving the admins a reason not to keep the existing content. In favour of leaving is the fact that our group is small enough that we
could coordinate and actually achieve it with a decent level of probability.
As far as "politics" goes, I'd point out a few things. The admins don't seem to be actively looking for (or, worse, sending an AI to look for) "offensive" content. Curt's offending material was linking to "mildly adult" art (as characterised by
@techumseh ). This seems to be the relevant forum rule:
Inappropriate content
This is a family-friendly forum. We do not want, for example, people coming here to talk about Civ and being exposed to (in particular) sexual content. While we tolerate some discussion of adult issues, we do not permit discussions that are explicit. Advocating cruelty, violence, hateful or illegal actions may well fall under the category of inappropriate content and be deleted or infracted. Inappropriate content can refer to other topics as well that are very context related. Moderators may at any time close threads or delete content that they deem inappropriate or not in keeping with the purposes of this site or of a specific forum.
EDIT: Additional Specific standards of Google, our hosts main advertiser. Images against the Google standards may not be posted.:
Google ads may not be placed on pages with adult or mature content. This includes, but is not limited to, pages with images or videos containing:
--Strategically covered nudity
--Sheer or see-through clothing
--Lewd or provocative poses
--Close-ups of breasts, buttocks, or crotches
We generally operate with a one-click rule as well: You may not link directly (one click) to any page that contains content that is not allowed at this forum. This includes links to inappropriate website, even if the landing page does not itself contain inappropriate content. An exception exists for some forms of inappropriate language (see below).
I haven't seen the art, but "mildly adult" does seem like it likely to be a borderline case at best. They didn't go after "nazi imagery" in a scenario or anything like that.
Even if we grant, for the sake of argument, that the forum admins have "bad" politics, finding a a place with "good" politics creates its own problems. Is there a major service provider that has sufficiently "good" politics, and is guaranteed to continue to have these "good" politics well into the future? Or, is one of our number going to host their own website and forum until they get incapacitated or uninterested and we lose everything? As far as the Civ II forum goes, we seem to be left largely alone by the admins. Also, some of our number probably think that the forum admin's politics aren't bad, or are even good. Will they follow a politically motivated exodus?
If some of your content is at the boundary of acceptability according to the rules of this forum, and you're afraid moderators will rule against you because their politics are different from yours, there is another option:
don't discuss politics on this site! There are lots of places online where you can argue politics. Is CivFanatics Off Topic so much better than any of them?
There are definitely services where "mildly adult art" should be allowed, but IMO, it isn't important for CivFanatics. Especially when the de facto rule is "if you link to 'mildly adult art', don't discuss politics in the OT forum." If you do manage to get enough people to an alternate service, then I'll probably follow. But I certainly won't promote or encourage any sort of exodus.
I hope you consider one day in the future maybe uploading your scenarios to ModDB or archive.org or somewhere else where you'd have full control over your downloads and others could still enjoy your awesome scenarios. Would be such a shame if they're lost to the world forever. I've got copies in my personal collection so if you ever change your mind but can't find your stuff then just msg me and I'll get them to ya! 
