Community discussion: https://commons.wikimedia.org/wiki/Special:Permalink/343032988#Enabling_private_AbuseFilters_to_be_logged_publicly
I am pretty sure $wgAbuseFilterNotificationsPrivate is what we want, but just in case: The desire is for private filters to be logged at Special:AbuseLog just like they are on en.wikipedia.org. This I assume will expose private filter hits in EventStreams, which is why I made the proposal.
Thank you!