I don’t know what discord is, but I find that every social media owner/admin and developer can be reached at discord. Another thing is Matrix.
I’ve got no clue about these two platforms but I believe that they’re not a part of the fediverse.
I very much wish that replicas of these were available on fediverse, so that we could interact with them from our Mastodon, lemmy or other Fediverse handles.


IRC
the problem isn’t Discord per se but that everyone insists on using a chatroom to replace support channels, wikis, knowledge-bases, FAQs, forums, announcements, mailing lists, etc.