I flag something if I don't want to see it on HN. I don't care strictly what HN policy says or not. I want to influence HN and HN policy. I don't want to play pedantic games with written language. Language is a fuzzy echo of intent. I care about intent.
It's a fairly selfish view to distort a feature designed for abuse into a feature for your personal preference. Thought processes like that lead to the collapse of great communities.
If you want to influence HN, you should submit and upvote stories you prefer like the site was designed for.