It looks like dang has previously had discussions with you regarding the way flagging works, and this could be a similar issue. Enough HN users flag something,

It looks like dang has previously had discussions with you regarding the way flagging works, and this could be a similar issue. Enough HN users flag something, and if a mod doesn't reverse the flagging it just stays flagged. The mods are usually busy fighting bots and spam, so don't take this personally.