Does anyone else find it even vaguely insulting that twilight comes up in the 一覧 of related clubs? I certainly do

Me too. It comes up related to many クラブ it really shouldn't. But then again it's only because whoever created the club, added certain key words while it naturally belongs to the same category with many things. Like 本 & Literature.

...so I pretty much ignore it.

Yes i do. Anne ご飯, 米 wrote about real vampires, not sparkles wacko jobs.

Not really. All related クラブ come from the catagory of the club, like this club is under "characters". Since half the character クラブ are related to Twilight, it's not surprising. Besides that, I never pay attention to the recomended clubs.