Well, you are not wrong about the schism, the schism is indeed about the protocol and not about the mining. But I don't think you'll find many of the developer

Well, you are not wrong about the schism, the schism is indeed about the protocol and not about the mining. But I don't think you'll find many of the developers agreeing with the idea that the mining has worked just fine. It's horribly centralized, and while it gets better and gets worse, at its best it's "jeez this is really centralized and I don't feel comfortable at all" and at it's worst it's "only two entities who happen to be in the same legal jurisdiction need to collaborate to do a 51% attack on the network, oh yeah and they are already collaborating in other nontrivial ways". Miner centralization is still a huge issue for Bitcoin.