I agree that not everything has to be decentralized, but why not replace Discord with Matrix given hew mature and nice Matrix is? IMO, this is one of those things that should be decentralized.
Edit: for everyone asking why, read https://cadence.moe/blog/2020-06-06-why-you-shouldnt-trust-discord. The main point I care about is that as a free-to-use app with no ads, Discord is not profitable despite the Nitro subscribers. The operating cost to keep up with millions of messages a day is not cheap. They will, at some point, sell our data.
Discord doesn't have the same issues people left reddit for.
Yes, yes it does. Both Reddit and Discord don't allow 3rd party clients. It's just that Discord never allowed any in the beginning. The arguments of a centralized content silo applies to Discord too.
It's not like people just moved from reddit for fun.
Neither are people moving away from Discord for fun.
It's just that Discord never allowed any in the beginning
Yes. It also never needed third party apps because it works well, has good accessibility features, etc... while reddit doesn't. I honestly don't think that third party apps are a necessity most of the time. Reddit is just a relatively unique platform where they had a thriving third party scene and took them away without any intention to add the features that the official app lacked.