The difference between moderators that actually do their job proactively (reading out of their own volition what is going on in their communities), and ones who don't - is the difference between moderators that know whats going on in their communities, and those who dont.
Only having a "view" of proceedings from whatever gets flagged doesn't allow you to judge the bigger picture.
This is really a question about what gbatemps approach to community is.
"As a moderator you have no reason to participate, or be shown in your community" - unless something happened, declines the part where you would be needed as a rolemodel, and to enforce the rules on the ground, the part where people have actual confidence in your decisions, because they perceive you as part of the community, and not just an entity that gets called into action whenever something happens that touches on this forum terms of use.
To put it simpler - if your moderators are not willing to participate in this community to actually see whats going on in here, day in and day out - maybe try to elect someone in here who might be willing to do that. Sort of a govern your community from within, and not from the capital 500 miles away - approach. (Also, I'm out of the run, obviously - )
"Its always like that", and "If you dont like it, scram!", are the denialist approaches.
We've now shown you two examples of mirror threads, just put up to abuse peoples ability to help - solely serving the needs of the person, who didn't want to read this forum in the first place, going up in two days - and none of those for has been taken down - visibly - so that there would be a chance of a learning effect.
You can do all kinds of things - make a sticky that tells people that their threads will be deleted, if they are asking questions that have been asked and answered in here before, in the same week - although thats maybe the least viable approach.
You can lead through actions, and take them down - but you have to become a part of this community in a sense, you need to be visible in the daily proceedings - explaining your actions, and to be able to act before people are soliciting their "personal" answers, and then leaving to never be seen again.
You can split this forum into a "news and projects" section and in a "help me, I want - free for all" and then enforce it. That way you would get visibility without having to increase your moderation efforts.
Or you can do nothing, and let this prolong - vowing, that you might take action, if we use the reporting system - which will work with the same efficiancy as a DMCA takedown notice on the part of a file hoster.
Telling people in here, that you would take down duplicate threads, has to be followed up with timely action - otherwise it has no effect. The people creating the problem have no interest in participating in this community - they are interested in results, and as long as someone still talks to them and angrily tells them an answer - hoping that more people will read it, thereby reducing the need of him/her giving that answer again - the support abuser wins.
And not in a win-win kind of way.
We understand, that this is a conflict of interest, where even some of your paid supporters might be primarily in this to get their support requests filled - but the alternative of "just don't participate" until more people are unintersted in the platform, is no working alternative. We can encourage developers to only release their stuff on twitter, because this community has become a hinderance for people that wan't to follow developments in the scene, rather than "being filled in by someone", but thats also a rather lackluster approach.
Please - in some form - protect our interests, as people who would actually want to read about developments, every day (repeat visitors) as well.
The way this subforum functions currently is not sustainable, people get burned out left an right. Conflict, because of that mismatch is a daily occurance.
And we have not even started to get into the main release phase of hacks that will have a wider usability. We had a taste of that, the day I "had" to answer the same question four times in four different threads, in three hours - but people tried again, and again - because they didn't like the "nothing for you as an enduser yet" answer - and din't bother to read anything - before creating their "individual" support threads.
Create a "support forum" if you must - but keep it separate from news and project discussions. If people want to play their "I just need a quick answer" games in this forum, give them a place to do so - thats not mixed in with release and news discussions people would want to read to keep informed.