Wouldn't be surprised if there was a patch later on that added better ending slides, though.
I think they will. Has anyone noticed how Geralts narration* of the fate of Baron and his wife or Keira Metz for example sounds like he read it from a napkin written note he got 15 seconds ago. Considering the voice acting and direction is superb for the most part this really stuck out for how soulless and horrible it is.
I think CDP rushed the ending slides and narration because they ran out of time in the end. They will probably fix it, both in terms of content and quality, in a year or so.
*English voiceover