Yeah, the point where Kishimoto doesn't care anymore.
I do not understand by the "he does not care." You have not read the end yet. If the end confirms your suspicions, you are free to assume that.
So far with the myriad of other build of and parallels it appears Kishimoto cares quite a bit.
Which is fine and all, and I don't deny such moments happened. Kishimoto did when he had Sakura give a false confession to Naruto and still cling to Sasuke after he tried to kill her. Explain to me why I should take NS moments seriously when Kishi himself doesn't.
Or perhaps Kishimoto struggles with writing a realistic female character. They all are pretty stereotypical to me.
I can't give you a reason to take the NaruxSaku moments serious because it comes down to personal taste. Kishimoto is writing a Shonen, he is limited far more than you think. Also, japanese manga is vastly different than american comics. We tend to embrace romantic aspects even in works that are intended for young boys, look at all the Super Heroes and characters we have in our comics, they usually either end up with a girlfriend or some sort of love interest.
If we take a look back at Shonens most of the male protagonist prefer to fight and honestly show no romantic interest in girls of any kind. Again, Naruto is one of the few Shonen mangas where the main protagonist is depicted wanting to get with a girl.
The fact that such moments exist and Kishi is willing to treat them like red herrings is what pisses me off. And with only two chapters left to wrap everything up, sad to say, it's a possibility.
Red Herrings do not work that way.
A red herring is when you make it blatantly apparently that for example, a character is "not" evil or dark. You make him seem very nice and dapper, and the LEAST suspected guy in the bunch. So when the time comes and he reveals his intentions every one goes "OOOOOH, I never saw it coming!"
NarutoxSakura has been very ambiguous. If any thing the blatant NarutoxHinata and SasukexSakura, where the love was thrown right in our faces several times seem to be the red herrings in this case and scenario.
Only problem with that is that the movie takes place two years after the war, and everything indicates he did nothing about it. So either he got over her and there was no need for a confession, or he did confess and she rejected him. I can't think of any other possibility.
Nothing has indicated any thing yet. You saw at most an one minute preview and some screen caps. Once you see the movie then you can conclude this.