That is not what flag is for....
"How exactly does the flagging work?" - https://news.ycombinator.com/item?id=12173809
"...The purpose of flagging is to indicate that a story does not belong on HN. Frivolous flagging—e.g. flagging a story that's clearly on-topic by the site guidelines just because one personally dislikes it—eventually gets an account's flagging privileges taken away. But there's a new 'hide' link for people to click if they'd just like not to see a story..."
