Being new to this site, I have already foreseen this ''problem'' before joining, if I can even call it that. Steemit, being a social media such as Facebook or Reddit of sorts, has tons of categories into which posts are posted daily. Some topics are more delicate than others in regards of ownership of content. I will take motocross for example, news about scoreboards to be more precise. Photos posted there, will not be owned by the poster, at least for the most part. But excluding them will make the post mundane, dry if you will. They add value. The problem is of course in the user's post being flagged for using something that doesn't belong to him, which in turn causes him harm. I think this should be avoided in topics where the pictures themselves only add ''style'' and visuals to a post, but are not the main point of the post itself. It's a big grey area, especially in NSFW. Majority of the content posted there is not owned by the poster, and the people visiting there realise this. It becomes a problem when money is involved, as people can become jealous and flag this content. But, on the other hand, unlike the motocross scoreboards which take effort from the poster's perspective, these NSFW posts take very little work to put into them besides posting a few pictures which you do not own. As I said, it's a big grey area, and I'll be keeping an eye out to see how steemit solves this.
But, regarding your actions, they were noble, and in my opinion, correct. You fixed the ''damage'' that was done, and went above and beyond in that aspect. My hat's off to you sir, have a good day :)