I don't know, man. Some of the people here, in this very forum, would rather see forums cease to exist (i.e., Steam forums) in exchange for something like Discord. And while Discord has been very helpful communicating with others in real time, I just don't think it's a solid replacement for message forums especially if you're trying to consolidate information or trying to establish a decent sized community.
For starters, if you ever want to look up something that you're dying to know the answer, whether it's a game fix, finding out the impressions of a game, what's anyone's top title on a system, you can't easily find that answer via a search engine because what is documented on Discord doesn't even pop up there. You'll have to be in that Discord server and even if you are, Discord's search functions aren't that great compared to the search functions one uses on a message forum. Sure, they added the new threads feature on it but they disappear into archived mode after 24 hours and then you'll have to rely on the search function, which once again isn't as great to use than some people believe especially with changes Discord has done over the past year.
Obviously message forums are going to have to sort of evolve into something that can entice people to use over Discord but I just don't think replacing one with another is the end all, be all answer. I mean, if it can work out for a website or someone that oversees it, sure. However as an information hub, it doesn't come close yet.