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.

Matrix is basically federated Discord based on an open standard. But it's a separate thing from the fediverse.

The thing is that Matrix and Discord are really intended for real time chatting, including private and encrypted chatting, in a way ActivityPub isn't (which is more about persistent public conversations). So it makes sense that they are separate things.

IDK if that's a good idea, even Mastodon and Lemmy don't really interact that well. It's easier to just make a separate account for each type of platform.

I've interacted on lemmy from my mastodon account, but l spend more time on Piefed now.

!dumbquestions@crazypeople.online

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.

Lemmy vs Piefed doesn't really make a difference, because it's the same type of Reddit-style platform (also called "threadiverse"), while Mastodon is Twitter-style. The interoperability isn't great IMO, because the usage patterns are quite different. e.g. if you reply to a Mastodon post on a threadiverse platform, the OOP on Mastodon won't see any of the replies, and are probably not even aware that there are threadiverse threads about their post. IIRC you need to @ the OOP in each of your replies, which you need to do manually in the threadiverse, which isn't particularly obvious if you never use Mastodon yourself.

I don't think we need to reinvent Matrix "just" to have some parts of it be based on ActivityPub.

It's being developed: https://github.com/MaddyUnderStars/shoot

That looks great 😃😃