@Tarkus I'd have to disagree.
Sure, we can get very out of hand at times and I think if a Discord were made, they should have heavy rules and moderation to counter this. And with the game being rated M, that should be expected by anyone entering a Discord for this game at this point so I don't think that sounds necessarily be a reason not to make it. And there are plenty of other games that have explicit content but have officially supported Discords.
You're wrong in saying that true fans won't be using it and spending time playing the game instead. Discord is already heavily used as a tool alingside the game to connect and find players to play with. This is literally true for almost any popular PC game out there. Also, if Discord wasn't relevant, than alliances in this game wouldn't be using them as their main hub for members to communicate. With just how widely used and accepted Discord is nowadays throughout any game, I think your second point is misguided.