A couple of points. Our Honor Code states:
- We care about accuracy. We're always aiming to improve upon our worldwide family tree and fix mistakes.
- We know mistakes are inevitable. We don't want to be afraid to make them. We assume that mistakes are unintentional when others make them and ask for the same understanding.
- We know misunderstandings are inevitable. We try to minimize them by being courteous to everyone, even those who don't act accordingly.
- We respect copyrights. We don't knowingly copy information that's owned by someone else. If we ourselves want to preserve a copyright, we're clear about what's copyrighted so others don't accidentally copy it.
- We cite sources. Without sources we can't objectively resolve conflicting information.
So there's that. I always assume it's an honest mistake before getting too worried. A lot of people are still learning genealogy, and may not understand why to source things or where to draw the line when it comes to copying word-for-word from sources. Even so, it's possible that this was their own Family Tree Maker site they copied from, and perhaps they wrote the original. It's even possible that they did not source the original, and so a "no source" profile pointing to a "no source" profile still means - no sources.
To answer your question, though, even if someone hasn't formally "copyrighted" something, it's still protected - you can't just take someone's work and copy it elsewhere without at the very least giving them proper credit. And we do our best to guide someone in the right direction if they have a misunderstanding on this point.
I would recommend reaching out to the Profile Manager and asking if they currently have any sources they can help you out with on this profile. I've found asking nicely to partner up and improve a profile goes a lot further than accusing someone of deliberately doing something wrong. If they respond in turn cooperatively, then you might resolve the problem easily. Often you'll find they appreciate recommendations you might have for profile improvement and learn from your guidance.