Hey, I've seen this post a couple of times and it's very overdue a reply.
You're absolutely right to say forums are ancient, they are! But so is this game, hehe.
When I was preparing for the server release, multiple people advised me to get rid of forums and move fully to Discord. Discord is the latest thing for community relations and they're not wrong about that.
For me however, I don't like how Discord pulls you into being present 24/7 and lures you into discussions with people who may not even be playing here - they're just there to get a reaction or share an opinion because they can. The overall environment feels highly toxic and requires more energy than I'd like to put in.
Next issue is Discord as a platform. I've personally been banned from Discord before for "distribution of hacks." When I reached out to the available support channels, I wasn't given any concrete reason - just a few words and that was it. That experience stuck with me. If they did it to me, they can do it to our community space too, and we'd have no recourse.
Forums, on the other hand, we own as a community. If the server is up, the website and forums are up. No one will mess with it, no one will require ID to enter, and no one can take it away from us overnight.
Another reason - I know who each of you are. I know who actually plays, what sort of people you are, what teams or groups you belong to. That context matters when I'm reading feedback or requests, because I can tell if there's any hidden meaning, who's being serious, and who's just stirring the pot. That kind of signal gets completely lost in a fast-moving Discord channel full of randoms.
My preferred way of communication is asynchronous. While running the server I'm managing my other IRL responsibilities, and I'd rather give thoughtful, considered responses to players here on the forums, in DMs, or through support tickets - instead of reactive one-liners in a chat window.
I'll also push back gently on one thing: the market section, highscores, and statistics that Ipk mentioned aren't trivially "added to Discord." They're proper web tools with real UIs, searchable history, and persistent links you can share. Discord embeds and bots are no substitute for that.
Overall, I wasn't 100% sure about my decision to keep the forums at first, but as of now I'm extremely happy with the choice.
Cheers.