I also stumbled across this other group of people making a webVR/webXR based metaverse thing called exokit.
https://github.com/exokitxr/exokit-browser
One of the devs actually ported VRarmIK to javascript, complete with VRM anime. webm related, source https://twitter.com/webmixedreality/status/1185443815529811968
Details are scarce outside of yet another botnetcord, but definitely looks like a group to watch. Clicking around their github, I found this small list of vrchat resources
https://github.com/madjin/awesome-vrchat
Lots of interesting movement in the metaverse space. It's a real shame that almost all the information is hidden away in a proprietary chat app, but I guess that's 2019 for ya.