I just read through the group selection wikipedia article. It does not seem to be abandoned as a theory, it seems to be a topic with proponents on both sides, a

I just read through the group selection wikipedia article. It does not seem to be abandoned as a theory, it seems to be a topic with proponents on both sides, and there are strong arguments for both sides. The selfish gene argument is an old one, and it's just mainstream, that's all.