Thanks. That makes sense. Means it would be more about what images etc are with the writing than the writing itself. Sometimes NSFW seems to be used to protect children (probably a non-issue on Steemit) or protect people in general from seeing things they may find offensive, in which case the text might matter. In the scene you describe, unless the people are literally leaning over them reading it, the text shouldn't matter. I'll keep that in mind in terms of illustration of these stories.
RE: Where does this community draw the line in terms of NSFW?