I know it's not really a report, but I look forward to the moment when this mod will be stable, yet this moment isn't coming, what happened to this mod?

This is a duplicate of #136, #266, #136, and many others.

Basically on hiatus at the moment it seems. There was an issue with the underlying emulator, but apparently that might have been fixed now, so kind of in limbo.

oc2r is a continuation development of this mod. Currently it supports 1.20.1 Forge, but they have plans to port to Fabric by using Architectury.

Fnuecke did attempt to update however they never made that public.