I love the Naruto OC fandom for its variety of different characters and views on the series. I love seeing well-developed OCs and OC x Canon / OC x OC Pairings. And without this community I would not have improved with my characters as much as I did
But yeah, Sues... Though we need to define the term "Mary Sue" first. For me, a Mary Sue is a character that is inappropriate for the universe and breaks the canon rules. Along with this there comes the OOC-ness of Canon characters. Sure, everybody has got their very own interpretation of a Canon but sometimes I am not sure if people have actually watched the series/ read the manga ... And this bugs me a bit.
But a Mary Sue is not a character with strong abilities, long hair, big boobs or whatever. I mean, look at Kaguya Ootsuki or Mei Terumi who would be hated if they were OCs
Yet, no matter how bad an OC might be, no one deserves to get bashed for their creations and I despise these Mary Sue Blogs on tumblr.