Feels rather dissatisfying to me. Sure as a whole, the Many Eared Tribe has managed to secure a great and financial future. However, it requires that most of the clan become farmers to help achieve this. But what about the individual goals of some of the many Eared Tribe, for example, what if some don't want to be farmers, but something else. If I remember right, there were some who wanted to be florists, scholars, and/or even a police officer. If the Many Eared Tribe potential and capabilities don't exceed beyond that of what they're used to and/or farm work, nothing really changed as they're still reliant on other demons, although they can now at least afford to be choosy about their security due to their finances.
Honestly, I hope that this goes further and shows that with the newfound profits that the they've achieved, the Many Eared Tribe could then focus on training more than their hearing and actually develop their magical talent and/or physical abilities, and thus as a whole grow greater and thus their many members could actually pursue more opportunities for their future. If that's the case, then that would be amazing.