I don’t really think it makes any sense personally for it to be there. The point of the button is (1) for users to know the post was cross-posted somewhere else and (2) a tappable item that if the user taps will display all the locations it was cross-posted too.
Another user made a good point that it should probably appear after the title because it reads better. Eg. you see the post first and then you see that it’s cross-posted. In addition, it ties the information to the post which makes sense. It shows the user “this post has been cross-posted elsewhere”.
If it appeared by the name, it would be confusing since the immediate context is the name and community. A name or community being “cross-posted” makes no sense. You can’t cross-post a person or a community. You cross-post a post.
Off topic: the onion needs to resume making videos again. Their “news” videos were amazing and most of them are still relevant today even though most of them are 12 years old. Also sex house was hilarious. Please bring these gems back 🙏