The discussion board on Steam IMO is now a negative thing for the game.
There's a ton of trolls in there that for some reason hate DF and want to devote their time to trolling it. So so much of the stuff in there is trolls hating on the game, claiming it is unplayable/horrible due to various troll-reasons.
And in general, the mood in there is just like vile. If there's is a bug, it's immediately like "the devs stole our money and don't want to work on the game" and such stuff.
Steam obviously is not able to moderate it. It's not going to happen that they deal with it.
I suggest deleting it and replacing it with a link to some nice communities with moderation.
I feel like, it is sad that new players looking for advice or the community or whatever then enter a troll den. It would be better to get players away from that foul place and get them into the community.
Tbh I am not sure if I would have played the game if the first discussion place I see is full of people claiming the game is unplayable due to crashes, the devs don't care ever to fix anything in the game, the people playing the game are crazy cultists, and in general nothing works and nothing is fun.
Even if I was aware they're making stuff up, I'd stil feel like "whoa the people around this game are super toxic and vile", maybe I better stay away from this product."
If it's not possible to just delete it, which I think would really be the best - Then AT LEAST out up a sticky with links to some nice places and a warming that the Steam forum is toxic and not representative of the DF-community.