The problem with decentralised alternatives to Discord isn't just the set up time.
Me and some of my friend group are pretty technical and we're willing to jump through all the hoops and difficulties to make our own little cluster of federated self-hosted servers.
The problems start occurring when we actually look at what these open source alternatives are actually capable of. And... Uh... It looks bad. Voice chatting and streaming and text channels on the same client are an absolute must.