This seems to be a corporate version of what I’ve witnessed: large groups of people getting together in vacation rentals or studios at writing camps and breaking off into small groups, each writing around a theme and passing ideas around fairly democratically, in a messy, creative, communal way. Then sharing and layering later. That leads to lots of contributors to one work of art, as they all reach for the best way to tell a story and fit it to a musical vibe that enhances it (or the other direction, it takes all kinds of approaches).

Never a whiteboard, so if that’s literally true I guess that environment would make me sad and disillusioned too, and I’m sorry your friend was dealing with it. But it’s certainly not the only model!