Not villains included. Just the fact whatever it seems to be neglecting without reasons, everyone is cool with it like nothing. Like Naruto. We don't see K9 tales on Sasuke but who cares! He got Sakura and then leaves her. But she's cool.
See...
Well, that's why we call BS on this ending, I don't understand why you pointing on other thing. But it's commonly, because it's fiction, people want to belive that doing bad thing's - and trying to do good thing - will repay you. But it's not, people always remembers worst of deeds. And why we call BS on this - it's because Sasuke literally was villian half way of story, even him "saving" the world, was for his own purpose, not for saving all people. He didn't do a single thing to redeem himself.
If your talking about the ending with 600, 700, and The Last, I'm pretty certain it is shown that he ends up with Hinata before SS even became a "thing". I haven't, and won't, watch that stupid film, but I'm pretty sure that Sakura and Sasuke aren't dating, and Sakura is still just sadly remembering the a**hole as he wanders around the world.
SS become a thing in 699, that took place before the last.