All this talk about Discord replacements plus my own experience attempting to host a Synapse has got me wondering why it seems so hard to implement voice chat.
Stupid idea: back in 2022 I got an Asterisk server working on a raspberry pi over AREDN without too much trouble. What’s stopping people from just using a PBX like that for voice chat?
The one point that has basically been solved is NAT traversal. Thanks to Wire guard, Tailscale and the like. The relevant parts are open source and can be used basically as a library.