From what I have seen on here, all nudes would have the tag, because some don't want to see the nude thumbnail in their Feed. That's the purpose of it too. You have the Freedom to post, and others have the Freedom to not see it. In my settings I have NSFW set at HIDE, which means I would not see the thumbnail in my Feed if NSFW is added.
If you have been flagged, you will have a minus sign instead of a plus sign in front of the Upvotes when you check them. A whale flagging you would wipe out all the earnings for the post, so you would know that pretty quickly. Like everything on Steemit, it's not an actual rule, but a common courtesy to warn others that the post contains nudity. But others can and do exercise their right to flag posts containing nudity if the NSFW tag is not used.
Do you then warn others with NSFW (not safe for work - but I would assume there are only adults working, unless we are talking about child labor) if your posts contain racism, violence, sexism, homophobic or other material that some may find offensive?
Last time I looked, access to the city of Florence is not restricted to Adults only, nor are any Museums (be that the Louvre in Paris or the MoMA) not accessible to children - in fact, in my city of Vienna, the Museums are generally free entry for Children ...... and, oh shock and horror, none of the Rubens are covered!
Source: https://steemit.com/steemit/@rachelburger/steemit-s-nsfw-posting-rules-undercuts-quality-content
Would you really want to associate ART with this?
https://steemit.com/trending/nsfw
https://en.m.wikipedia.org/wiki/Not_safe_for_work
that's the best you can do? citing a Wiki that has editing issues?
you did not address any of the points I made. Look what is trending as #nsfw here on Steemit and tell me (with a straight face) that art belongs in that category, and that the worlds finest Art Museums, public monuments in cities all over the world etc are #nsfw. #facepalm ◄ now this would be a tag to use dealing with your comments.
Here on Steemit, that tag #nsfw is used for PORN - so get your head out of the toilet!