I think it says something that NH fans are more worried about their love being canon than well written, or believable, or not a complete asspull.
Even The Last Airbender, a series that threw in its romantic elements as a sort of last second thought when suddenly it got a ton of attention, at least tried to properly develop it. And the characters involved were in fact, three dimensionally written and had an existence outside of being a love interest. Does Hinata have any sort of development outside of stalking Naruto?
NH fans can scream canon till the cows come home, but no amount of canon is going to make me buy their relationship unless The Last, if that is the direction they go, is a love story on the level of freaking Titanic. And given how small scale the plot seems, it's doubtful.