I've been saying my crack ship was canon all week because both characters are still single. I usually make jokes about them being in the same panel, and stuff, so I'm not really serious, but while I can understand how happy these people are, the straight Naru/Sasu/Saku/Hina pairings are pretty toxic.
Remember when Naruto and Hinata were holding hands?
I don't know, I think it's fine to post that stuff on your blog, but if you come to NB and start saying your ship is canon, then I can understand the annoyance.
Like, I don't care what other people post, and on tumblr you can blacklist tags, but there are always people who go into asks and be jerks.
And not everyone has to have a positive opinion of the mangas end. I mean, don't threaten to kill anyone, but tags are usually jokes anyway.