4 exahash is 4x what they were last year. I think the number of miners creating their own blocks has increased by 10x. It may not reflect a large amount nor hashrate yet, but it is well in its way.
Discussion
I am a huge fan of ocean. They are crushing it in a field where all of their competitors are pulling in the opposite direction, toward centralization. Literally nobody else is doing what ocean is doing...yet.
But we have many many miles to go. If mining decentralization is Mt. Everest then Ocean alone has not reached basecamp.