Of course, and that's no surprise having in mind Ocean's strong filtering stance. But if you look at individual blocks found by Ocean, you can see that some blocks are not filtered. Probably by miners who like Ocean's payout method, but don't like filtering. And that makes sense.

E.g. if you look at blocks with the tag "OCEAN.XYZ >NiceHash" or "OCEAN.XYZ >Peak Mining" or "OCEAN.XYZ >Penguin", those look like created by a node with a mempool consistent with the majority of the miners and the nodes (i.e., Bitcoin Core).