Review Detail of Stieborn in GoT: Break the Wheel

because somehow the Author thought that it will be a good idea to put the yuri tag, when obviously the Mc of this novel is male and het

Well your just plain wrong as the fic does indeed contain Yuri by the very definition. The first R18 scene was a female 'servicing' another female.

yes there is yuri "content" but again the mc is male and the yuri part of this novel is just a side piece and I don't want that in the yuri tags.

That's exactly the point of tags, what are you the owner of Webnovel or something. "I don't want that in the Yuri tags." It has Yuri just as much as it has action, next someone will say they don't want it to have action tag because the action isn't to there taste.