You know what's ironic about saying that? You may well be over analyzing things yourself. you take what is written and shown to us in the story and put up your own interpretations to it. You say that Naruto was hinted to reciprocate Hinata's feelings in the manga when there was no indication of it in his inner monologues or his actions. You say that Sakura's interactions with Naruto are only platonic, when she displayed no such affectionate behaviour to any other male character except Sasuke who actively scorned her. You say that Hinata is not all about Naruto when her inner monologues are full of Naruto-kun this, Naruto-kun that, or about how she wants to be like Naruto and wants to show her worth TO HIM, and no one else. you say that Sasuke and Sakura are not in an abusive relationship when 1) Sasuke did not ever care about her self esteem issues and rarely if ever offered positive encouragement towards her, 2) nothing indicates that their relationship is a healthy and meaningful one, as even the comedy moments between them are just PLAIN SAD, and 3) F.Y.I. leaving for a decade and not even bothering to contact your spouse or child nor even let them know where you are or how you're doing is considered neglect and neglect is considered form of abuse too.
This is all, in varying degrees, a flawed analysis, and we'll punch each out one by one here:
1: Naruto was not shown to reciprocate Hinata's feelings. What do you mean? There was growing love, but there was no reciprocation as in forming a relationship. True romance didn't happen until the Last for this pair. But as things show us, which goes in line with what's in the Manga, Naruto didn't understand his own feelings as love.
2: This actually isn't quite true either, as when she is in a caregiving role, she does attempt to assist (Lee is an early example). She does care for Naruto, the relationship is unique, just understand that it is platonic.When in I must break all bonds sort of place, Sasuke scorns everyone, by the way, and certainly stops this in 698/699.
3: Hinata is still not all about Naruto, she is shown to care for other people and things. She is a supporting character to Naruto, which isn't a negative thing, so not sure if we're criticizing her because she's a support character that isn't main, or other reasons.
4: Breaking down to A/B/C:
A: Still not how abusive relationship works by the way, but self-esteem is a personal thing, Sasuke, and Naruto, actually pushed for Sakura to try to keep up with them, with their own streaking ahead in their abilities and desires. So...what foundation is this from?
B: Their relationship improves. It's still not abusive?
C: Sasuke isn't a great father, we can say this. But he is tasked with something important, and no, neglect in this particular case is not necessarily abusive.