I got it! In a bid against this relentless thread spamming I think I have a solution.
Make a new section (placed above the general brink discussion) in which only moderators can create new topics. From that point on every thread on a specific subject deemed worthy by the forum staff will be moved to that section.
It’s basically the same thing as stickying posts but without the con of cluttering up the topic lists (making topics drop faster from the frontpage which is a part of the problem).
That way we can have a consistent and durable conversation on important topics without someone pressing the reset button every time.
The ‘Constructive feedback on AI’ which is stickied now is a good example of a thread eligible for this section.
I bet it will be less work than having to constantly lock duplicate topics. And I’m also sure that it will discourage topic spam in the long run as people will be more interested in holding a discussion that stays rather than risking their efforts been lost in that maelstrom that is the general section.
Two other advantages are that A: It demonstrates SD is listening to their playerbase, and B: Durable threads actually create a much more substantial feedback than spam topics.