It's kinda ridiculous, i know, but i think that Kishimoto did that to show that her love toward Sasuke is something true, she loves Sasuke unconditionally, anyway, SasuSaku is not dead, remember that Sasuke was actually worried when he did that to her, he didn't wanted to Sakura follow him and Naruto, he don't want to loose Sakura, so, i still believe in SasuSaku, anyway, if Sakura stops loving Sasuke, it doesn't means that she will love Naruto, right? And i don't think that Naruto loves Sakura now, Naruto said that he was joking when he said that Sakura was his girlfriend, i think that Naruto likes Hinata now, Hinata loves Naruto and they increased their bond.