Why? Don't you think having just one story informing people about the resolution of this case is relevant?

You know as well as me that flags are seriously overpowered, particularly flags from long-term users like us. I wouldn't disagree with flagging this if the front page was drowned with these stories, or if this was a particularly contentious source, but given that it's a straightforward report of the resolution of an event relevant to the tech scene, it seems reasonable to let it have some attention even if you don't personally like it.

In other words, don't use your flags to remove all stories that you're not interested in from HN - use it to remove stories that are just not right for here. I don't see how you can argue this story is one of the latter.