You are misleading again, miners on Ocean arent building the entire template. Miners connected to Ocean are being being told what coinbase tx to use in their templates. If they choose not to use the one Ocean provides, they are switched to solo mining, which removes all variance reduction benefits, which is the entire purpose of pool mining. Ultimately no tangible decentralization is achieved because Ocean (being a centralized trusted third party) can be pressured by regulators to censor, just like any other centralized pool can.

A solo miner doesn't require a pool server construct the coinbase tx for them to include it in their template. Which is exactly what ocean and Sv2 pool do. A solo miner also isnt required to connect to a pool server, like Ocean. Its a centralized client/sever relationship and all the same risks apply.

Its crazy that you two still keep up this charade.

Not really, all they do is force the regulated miners to use a government sanctioned mining pool, and the government pool builds the blocks. They will be forced to comply or be shutdown and have their equipment seized for money laundering and terrorist financing.

White market mining is a security risk, always has been and always will be.
Black market mining is the real security model.
Unknown hash is the only secure hash.