The end result? Everyone dies

I enjoyed this movie, but there's a big flaw at the end when Furiosa takes over. The society Immortan Joe was running, is doomed after he is displaced. The only thing Furiosa's clan had was heirloom seeds. Immortan Joe had factory farming that was already feeding people. The green place no longer existed because it couldn't be managed. Furiosa's clan was incapable of keeping it going. So... now those same people are in charge of Immortan Joe's empire. Immortan Joe is a tyrant, but he managed water, food, and supplies. Furiosa undid all of that when she returned, opened the flood gates and destroyed the system that was, in fact, keeping all those poor people alive. I understand the symbolism of feminism and revolution... but when the movie ends with the death of those who were supposed to be saved, I have little sympathy.
Fun movie otherwise.