I've taken to linking to moderator admonishments (mostly dang, occasionally pg or sctb) where I think it might be helpful, e.g.:
<https://news.ycombinator.com/item?id=43478913>
This is not for every flag, by a long shot, and occurs (checking my history) perhaps a few times a month.
Note that the follow-up to the above link also earned another dang cite. Few justifications are original...
The practice seems ... not too disruptive, and at least modestly effective. It also gives me a track record of who's turned up before.
Linking quips both keeps my own voice out of the discussion, and mutes the impact on the page itself.