Yes of course. I wasn't talking about a high quality campaign: I'm surprised there isn't even a low quality one. Perhaps that would be contrary to the 0ad philosophy.

I've played perhaps tens of hours of 0AD. I boom early, try to create an unbeatable army, and then go win. When I saw competitive 0AD players on YouTube, they played completely differently: they train cavalry or cavalry archers and go hassle the booming opponents really early. Then retreat to go hunt some chickens for a bit, train some more cavalry, and go raiding again. They simultaneously attacked each other, all the while trying to continually improve their economy meanwhile. It seemed much more fun than the way I played tbh.