I don’t think it’s a threat. The point is a minority of low economic value nodes aren’t that important be they bip110 or random miner front nodes. Any given node is not important. The post claims that because people can push non standard but consensus valid transactions around the network despite a minority of nodes being against them it is somehow not decentralized. It’s a nonsense claim. The tyrannical minority not getting their way is decentralization in action. If the mining network has sufficient nodes to relay their transactions and large important nodes don’t abandon core for bip110 all we will see is an increasingly hostile minority try to threaten network participants. The network will be split, but because the bip110 people know they have no hash power behind them they won’t make a clean hard fork.