So we should never do anything - up to and including "be aware that they think this way" - until someone is actually hurt? Um, no thanks.
I just did a quick browse of the NC Freeform solos board. In a deeply unscientific survey, 13 of those stories had a setup that appeared to be "normal" (i.e the sort of situation anyone may find themselves in as opposed to either historic/fantasy, sci-fi, supernatural etc or highly specific situations). Should we "do something" about those authors?
Likewise a survey of the 1x1 request board reveals several NC requests with a "normal" setting. Should we be "doing something" about those authors rather than waiting till "someone is actually hurt?".
It seems to me that there's just a bit of difference between "writing sexy stories involving people who aren't actually in our day-to-day lives in a forum specifically designed for that purpose" and "talking about which of the people in your life you want to drug and rape, when you're likely to be in a position to act on these or similar fantasies".
1) Do you have a source for "talking about which of the people in your life you want to drug and rape, when you're likely to be in a position to act on these or similar fantasies"? As far as I'm aware the discussion about people in their lives related to "hatefucking"; a term for (often highly) aggressive consensual sex where you let get out your anger while having sexual relations for someone. The "talking about drugging and raping" related to pictures of random women found on the internet with comments like ""Can you tell me what this chloroform smells like?" attached.
2) If I was the sort of person to think that someone having fantasies or discussing who they'd most like to have sex with meant they were a danger in real life and thus should be named and shamed for such things I'd be far more worried about highly detailed, highly explicit and frequently highly detailed roleplays which go into great detail on what one would do to the other party as opposed to a simple poll on who people would like to have sex with and a couple of captions for photos in the same way that I'd be more worried about someone doing a detailed child porn fantasy/roleplay then I would by the sort of person who creates the captions that can be seen by typing "jailbait" into google images.
3) Building on both my point about the types of roleplays on E and what Valthazar and Kythia have said, what would have been different if instead of polls on who they'd like to have sex with and a few captions on photos in a private, discretionary access Facebook group the students in question had come to the private, discretionary access Elliquiy and done roleplays featuring people they knew in real life with accurate descriptions and names where they went into a detailed, explicit roleplay about how they'd drug and rape them? Isn't the E version even worse?
Should roleplayers on E have to make a declaration that none of the situations they write about in stories here have any connection or similarity to their off-line circumstances? And if there are too many red flags should we out, name and shame them? If someone who seemingly owns a company or has a secretary IRL does a roleplay where he and the secretary hook up (and noting the power imbalance in that relationship it doesn't even necessarily have to be an non-con or semi-con fantasy) should we be outing him to the news in case eventually "someone is actually hurt"?