Yeah the Garry's Mod collab was kind of rough with 14 people, understandable though I've seen even small collabs being awkward if there isn't someone to lead it. It was fun after they got the hang of things and it ended up having its moments. Splitting chat into 2 teams probably helped a ton.
They have to private the streams probably to avoid DMCA strike with some licensed stuff in the maps, so that part was also an oversight, hope they learn from this and they could always try again with the same group, otherwise it was pretty fun, and glad I woke up early to watch it.
Everyone was pretty nervous at the beginning, I know they usually say they're nervous with some collabs but this is probably a different scale.