No, it's Naruto overcoming his childish crush and realizing that he feels more for the person who would sacrifice everything for him and truly understands him over the superficial abusive girl who lied about her feelings for him and still loved Sasuke despite him trying to kill her.
*Somebody said it's fare fetched*
Maybe. But the entire manga is about people coming to understand each other and realizing that maybe they were wrong. Everyone hates and/or look down on Naruto in the beginning but come to realize that he's a good guy and a valuable person. Even Iruka had to be shown that Naruto was more than just the vessel of his parents' killer. The only still living people who don't in the beginning of the manga are the Third Hokage, Kakashi, Jiraiya, and Hinata. The latter three all have a strong connection to Minato and at least knew Kushina, so they knew better, but Hinata was completely unconnected. She was the only one who knew the truth - that Naruto was putting on a brave face and acting tough because he wanted to be recognized and was ashamed of his failure. She didn't need to be shown that Naruto was good - she knew it already, despite being a young child. The manga continuously runs with that motif, that the person who could see the truth, especially as a child, is extremely important. That goes for Itachi, Hashirama, and plenty of other characters. Sakura, like everyone else, needed to be convinced. She couldn't see beneath the surface.
A big part of the manga focuses on Naruto growing up and trying to understand others and the world in general and this is epitomized in the Pain arc. Until that point, Naruto answers violence with violence, which is what has spawned almost every villain thus far. Sure, Naruto is doing it on the side of good, but Pain demonstrates that hurting others for the sake of good is still hurting others and causes more suffering. Minato even tells Naruto that though Pain physically killed Jiraiya, it was the world of shinobi that created Pain and thus led to Jiraiya's death. In the Pain arc, Naruto realizes he's been going about trying to fix things the wrong way and has no clue how to do it, but the first step is to answer hate with forgiveness, not more hate.
Kishimoto emphasizes how wrong Naruto realizes he was about things by having Hinata confess her feelings for Naruto during the "all is lost" moment of the Pain arc and Naruto is utterly shocked. He couldn't imagine that anyone could love him because all his life, he's been treated like kitten by pretty much everyone. But Hinata does what Naruto realizes he has to do later on. She sees the pain and hate around Naruto and doesn't join in - instead, she loves him. Naruto echoes this by sparing Nagato even though he wants to kill him so badly he can't stop shaking.
Hinata has always been used to guide Naruto back to the correct path, which, poetically enough, Kishimoto has Hinata say Naruto has done for her. She does this during the chuunin exams by demonstrating that she understands Naruto better than he even understood himself. She does it during the Pain arc by standing up for what they both believe in and keeping to their shared shinobi way. Most recently, she does it when Neji sacrifices himself to protect both her and Naruto. Naruto's promise to keep his friends alive is directly contradicted and his resolve begins to crumble, but Hinata tells him that if he quits now, it will all have been for nothing. Despite her own pain at seeing her beloved cousin murdered to protect her, she knows that love and camaraderie are the right path and helps Naruto realize it too, even if she needs to give him a light slap to get it across. Virtually every time she's had a serious scene, Hinata helps Naruto realize the truth and understand himself and others more.
This theme of understanding each other, of connecting hearts, of seeing the truth, is one of the most central themes of Naruto. It is why Hagoromo invented Ninshuu, the precursor to Ninjutsu. It is why Gaara was able to become Kazekage despite being a mindless killer only a few years before. It is why Itachi chose to kill his family rather than let them start a war and why Sasuke only reneges on his desire to crush Konoha after understanding the truth of the villages from the First Hokage. It may be the case that Naruto ends up with Sakura in the end, but I hope that after reading this, you can at least understand even if you still disagree that it would be extremely thematically appropriate for Naruto and Hinata to come together at the culmination of the series. It would be very meaningful for Naruto, at last understanding things as they are, to be with Hinata, who has understood from the beginning. With Sakura, I do not see any similar narrative structure.
For me, I will accept SS if Sakura succeeded in killing Sasuke 
