The old Help forum was fairly targeted to answering questions. It wasn’t perfect, as discussions (some long-winded, though those weren’t frequent) did sneak in.
Blending that aspect (Q&A) into this forum is bound to be messy for exactly the reasons that we want to keep discussion (especially long-winded) out of a Q&A “category.” But as the (linguistic) “register” of this entire forum not simply “tends towards” discussion, virtually any post in it, EVEN a / the Q&A category is going to spawn discussion. The post voting format was a good try, but it seems to have failed (due to the confusing “diferent-ness” of the format). I think that is largely because of the tone / spirit / register of Discourse overriding something as straightforward as a Q&A. Perhaps we can improve this, knowing some of our tendencies and the limitations / restrictions of this software.