I feel the same.. This board is pretty dead too, not very active. BUT i've posted a comment on a video who was presenting Open-Stream, i also comment the youtuber (GameTechPlanet) that this project seems to be dead but it confirm me that :
I know the forum isnt super busy yet cause this project is still pretty new. But I can assure you its not dying. In fact the total opposite is happening behind the scenes. They working on this software everyday
I don't know very much what to think about, i've hopes, but when we look at github, something is weird ..