Useless. Bitcoin mining is decentralized as it is, I don't see any need for it to be "more decentralized" cause the current setup's already working so well for the miners. and I know the miners would agree with me on this one as well. I'm all for innovation and all that stuff but in this case there's nothing to be innovated, and it just feels like Jack's trying to reinvent the wheel when it's already turned for decades without any issues. The introduction of a new mining system into the mixture will just make stuff even more complicated not only for the miners, but for everyone, as the crypto industry's highly dependent on these people for their transactions to go through. So yeah, this is a common Jack Dorsey L for me.
I don't think it is totally a useless idea because it has both advantages and disadvantages. Before now mining pools could withhold the payment of miners for any reason because block reward and transaction fees are collected by mining pools and distributed to individual miners. But Jack Dorsey's mining pool,
Ocean will make individual miners receive payments or block rewards directly from Bitcoin without any intermediary mining pool. That's not a bad idea. But Bitcoin is fine without this so-called decentralised Bitcoin mining, we don't even need this service because mining is already decentralised. However decentralising the payment system is not a bad idea, at least miners will receive block rewards faster and more conveniently.
Everyone now wants to associate with Bitcoin because of its recent performance and adoption. Even those who talk down of the Bitcoin project are gradually investing in the sector. This is a good representation of the saying that "success has many friends". Everybody is now talking about Bitcoin to gain popularity or increase traffic. Maybe Dorsey is looking for cheap publicity and he wants to use Bitcoin to gain attention.