That is part of the ending. It occured to me after I had played the game twice.
At that point when you are talking the battle is ended. Now your getting the conclusion.
I'm not at all suprised if people see it as part of the game though rather than part of the ending.
I think part of the problem is, it feels artificial, like a last minute stop gap measure put in there, to make a semi-legal claim of the game having an end.
I can of course only speak for my self, but what upset me was not that my journey ended (or not ended (or whatever the last cinematic is supposed to accomplish)), but the rather vague expositions (is that the right word?) that you get on your npcs destiny.
All the buildup of their skills and personality felt wasted when it wasn't used for anything in the end. Lets face it, the game was easy enough, that you didn't need power built npcs for the combat in the game, so it would be a fair assumption, that you needed to gain influence for some purpose, yet to purpose never seem to come
Just my 0.02c