It’s only my own opinion, but I think this feature request is legitimate and makes sense (it actually makes perfect sense to me). As said above, a first post isn’t written the same way as is an answer inside a going discussion. Being warned beforehand about what you’re going to read and why some parts may feel a little weird [for a first post] prevents the psychological surprise and need to “get it” by yourself (which the vast majority of people eventually will, but why not tell them before the post in the first place ?)
The link to be able to read where the discussion comes from, for more context, etc. would also feel far more logical above the post than under it.
This wouldn’t be needed for all splits. But I guess it’s easier and quicker to delete the information (should that functionality exist one day) where you do not need it than to add it manually where you do need it (which is still a solution).