I left a comment
here, if it persists feel free to mention it.
If a discussion rule is being broken, then it should be mentioned — that being said, I don't know anything about Nasu, so I can’t say if there actually was a discussion rule being broken, but believing that there may have been one and vocalizing it isn’t report-worthy in of itself. Now the manner in which they did so (blurting it out in a staff thread published by a user that they have history with, as opposed to mentioning it to a staff member on their wall) is obviously not acceptable, and they seem to acknowledge that.
Regarding the guy’s history with wankbreaker. Could it be that they are targeting them once more? Potentially — there is a genuine possibility that they are trying to undermine them and mask it as believing that a discussion rule being broken, however, I, personally, can’t conclusively say that and for that reason I don’t support any punishment.