Canon is not enough for them. They want to purge us from existence. Good luck with that 
Deep down, they're not happy with it. After all, Kishi basically said that it was out of pity. He develop NS as a red hering ( giving us right over them when we said we had development and even begin to doubt it was a red-herring, who develop more a red-herring than the main pairing). He said Naruto fall in love with Hinata in the last ( so he confirm he never love her during manga time) Last recton the story, just proving it is an ass-pull. They got their pairing canon for the wrong reason. They not happy about it, but don't want to lash on the author, so we're the perfect target, we represent they're fear, even if they're pairing is canon, it felt such like an ass-pull that they are insecure about it, afraid of an alternate ending. They would like everyone to hate NS or love NH, but even neutral fan begin to despise it because it cost the ending and the series too much, so they're afraid that they shift 180 backward. Junko, an editor believe it was NS endgame. NH happen but it wasn't glorious for them.
It's like when you cheat to win a game and people aren't sure but have suspicion. You won in the record, but in your heart, you know you haven't.