The main argument for NH is Hinata being loyal to Naruto and liking him before everyone else, trying to sacrifice herself blabla. But- what about Naruto? If I counter with: Doesn't he "deserve" to be also with the one he always loved? It's like Naah. Naruto's feelings don't count. Sakura showing her affection? Doesn't count. Hinata deserves him because she was the first that liked him. Like, Naruto needs someone who "deserves" him. It sounds a bit like arranged marriage.
[Sakura? No, Sakura isn't the right one for him. She didn't like him from the start, having prejudices.Did she change? Well, yes, but a bit too late! Look at Hinata! He never noticed her? Well, but she's perfect for him! Always admired him...She will be a great wife. No one will complain. What does the husband think? I DON'T CARE WHAT THE HUSBAND THINKS! This is about what other people will think about them! Obviously, they like Hinata. We don't need that...new - age relationship stuff!]
Tbh, I don't think she deserves him just because she always liked him. She wasn't "there" for him. (Also one of the main arguments) She didn't stand up for him whenever he was bullied. She was just in the background, and the only time she actually did something was in the Pain arc, but wasn't really helpful. (Remember the times Sakura risked her life for him? Don't count!)
Just my opinion.
But another example: Just imagine a series in which the main hero is doomed to marry his fangirl and forget about his long - term crush which slowly warmed up for him just because that fangirl was his first fan ever. That's how I feel about NH.
NH really though is the franchise undermining it's roots, namely Naruto's development as a person.
In the beginning, Naruto wasn't meant to be an ideal person. He was whiny, self-centered, jealous of what others had, causing trouble because it was the only means he had to get the attention he craved. Sure, he had a good heart under it but there is no denying he needed to grow up all the same. His lonliness itself was a driving factor in all this, he was someone without family or friends. He had no bonds with anyone prior to Iruka taking a mortal blow for him, and during the first part of the series he went about making bonds with those around him. He emphasized with others and began putting their own good ahead of his own.
But this also lead to his devotion towards saving Sasuke. Naruto finally had connections to other people and Sasuke, the best member of his class, actually respected Naruto's abilities as a ninja. In this instance, Naruto had tasted the acceptance he had always wanted and when Sasuke left the village he wanted to bring Sasuke back in order to prevent Sasuke from severing that bond. At this point, Naruto is on the edge for doing something for a selfless reason (bringing Sasuke back for Sakura despite Naruto having a crush on her) and doing it for a selfish reason (bringing Sasuke back because he continues to want Sasuke's respect). In latter parts, this changes because Naruto wants to save Sasuke from himself.
The Last tries to say Naruto already had a bond despite all of this, a bond with the girl he thought was weird back in the academy. What's more, this bond is supposed to be the most important one of his life. Never mind that Hinata never helped Naruto through his troubled childhood, she is obsessed with being with him to the point she's more worried about a scarf than her sister, or that she fell in love with Naruto way before his development kicked in. Oh wait, The Last made Naruto appear to be selfish too in order to be with the selfish Hinata. This is the bond Naruto is supposed to spend the rest of his life with despite the fact the discovery of bonds is a major driving force of his character.
It's a case of the story not realizing what it's saying, invalidating earlier beliefs it exposed. Remember when we got the lore dump that only Uzumaki's could contain the Kyubi because of their unique chakra? Naruto's abilties end up being defined by his heritage in contrast to how he was presented with his fight with Neji. As the story went on it worked against itself, deteriorating until it didn't realize what it was saying anymore.