Maybe this is just a comment, but I think that flag was disputed on purpose. Flags are "disputed" for at least two reasons:
Currently, the following scenarios may result in a flag being disputed:
- A spam or "rude or abusive" flag is cleared (but not declined) by a moderator. These flags are unique in that they can impose lasting penalties on the post and its author, so a special mechanism is provided for them to be cleared without penalizing either the author or the flagger. This can also be done retroactively if the post goes back into the queue, in which case a moderator can mark all such flags on a post as disputed (regardless of their current state).
- A Not An Answer flag or Very Low Quality flag is reviewed in the Low Quality review queue, and the result of the review is "Looks OK".
In this case it appears the first thing happened, and it was by design, system working well, I think?
Disputed flags are neither good nor bad for the person who raises them - they don't have any effect on the number of flags you get each day.
See also: What is the difference between disputed and declined flags?
