I live under a rock. The entirety of my examples of social Sailor Moon Fandom are:
- Randomly reading posts on this forum as a lurker in previous years infrequently, of which I only really remembered the ones speculating about the setting, like the location of Elysion or stuff like that, or about that one PC Engine game
which I still really really really really wish had a full translation because holy crap guys Nephrite interacts with Naru in something based on the anime continuity and the Shitennou get revived in some way that involves the kurozuishou, they actually remembered what that thing is and...
what was I saying? Oh, right.
- Posting a billion words here (which is a billion too many) in the past week or so, and checking out some active threads. Seems like a lot of people here like to complain (mostly about Crystal) or are slightly argumentative, but nobody really seems like huge jerks, just people in bad moods articulating their points pretty decently. In other words it all seems pretty reasonable to me.
- Reading Shadowjack's 'In Which I Watch Sailor Moon' threads on the RPGnet forums, which were all very friendly and civil far as I can see, and a few posts in the current one (and image rehostening comic thread).
- Reading a couple tumblrs ("Sailor Failures", "F Yeah Senshi/Shittenou"/"F Yeah Moon Guardians", and the "Nephrite and Naru Treasury Annex"), which were mostly just decent articles, fanart, friendly speculation, or fanfiction snippets.
- Reading part of Sailor Moon Z by John Biles and Jeff Hosmer, (I should probably get around to finishing that one, it was interesting but really long.)
- Reading the Naru and Nephrite Treasury fanfiction website which is carefully vetted by one person who seems decent. The writing quality varies and some of the characterization is weird, and one or two dabble in really uncomfortable dark subjects (sometimes handled well, sometimes less so), but none of the fanfics seemed truly horrible and a lot of them were pretty good.
- Briefly interacting with a few people on Deviantart who seemed reasonable, and having friendly (but brief) discussions about stuff. I haven't updated my deviantart in a long time though.
- Searching image repository sites that had adult content and very few social activity elements. Some of the content probably offends somebody just by existing, and there's some I wouldn't want to look at personally, but I don't think there's anything it's ethically 'wrong' to draw per se. Also, that stuff exists for every major franchise, especially every major Japanese franchise.
- Registering on some subtitle/translation thing (I forget what it was) where someone wrote a big angry e-mail to everyone who was signed up complaining about the Sailor Moon fandom for some reason, because they personally were dying of cancer??
That was kind of a one-off thing though.
Basically, I haven't seen any reason to think the Sailor Moon fandom is somehow worse than other fandoms.
- People fight about weird details with any series, which isn't that big of a problem really.
- People disagree about character relationships in all kind of wacky ways, I think that's more of a cultural problem with 'one true pairing' monogamy logic and people getting too obsessed with jealousy
- Porn exists of everything, but I don't honestly see that as a problem?
- Individual random people will fight about pretty much anything wherever you go, so that can't really be helped.
- Fighting about homosexuality, transgender stuff, and LGBT things in general is just a thing in the modern day (and it's kind of cooling down from where it was 10 years ago, having become a bit more accepted/widely known); not a very Sailor Moon-specific thing.
- Fighting about beastiality... ohoho, no, Sailor Moon is NOT the center of that internet drama, there's definitely worse franchise fandoms to fight about that. (But I don't think it's an appropriate thing to hate on in cases like Sailor Moon anyway, since it only happens with sapient beings, all of whom seem to have human forms anyway.)
- Fighting about age gaps in romance... that might be more specific to Sailor Moon fandom, due to the source material being unusually supportive of the concept (Usagi/Mamoru being the #1 example, but not the only one). But I dunno. I think if both parties are mature and consenting, and are careful not to violate the law (you gotta wait for certain things until everybody's at least 18 in the US or, what was it, 16 in Japan?), then this isn't necessarily a problem, just a complicated situation.
In other other words, Sailor Moon's fandom seems pretty normal to me. A little on the older sisde maybe, since the franchise hasn't seen consistent releases or major revitalization since it's heyday, and the mainstream cultural thing has broken down since then anyway. But I haven't really been THAT active I guess, I don't know.
My views are pretty accepting and liberal anyway, so I don't think these are inappropriate subjects to consider, and I'm not seeing any drama specific to Sailor Moon that isn't going on in plenty of other places already.