@gamingonlinux The big draw to using Discord for support is that it's free; indie developers don't have to fiddle with system administration or pay for hosting on top of building their game and community.
Other draws include "number goes up," convenience of use, convenience of login if you need to ask a question (so you don't have to create and manage yet another account), and so on. Also that Gen Z (in general) has no idea how to use forums, so anyone 20 or younger is going to use what they're familiar with.

There's no excuse for only posting changelogs on Discord though. Use Render.com, one of the millions of sketchy free hosts like InfinityFree, or even goddamn Cloudflare Pages if you have to (GH pages still price gates private repos with public pages, right?). Gating that to only Discord is pointless crap.