Why do you assume a miner's node has to be a dingy Raspberry Pi at home running exclusively over Tor?
If a miner cares about such a thing he can run their node on AWS and add a bunch of addnode= to their configuration, just like Ocean or anyone else can do it.
If they can afford enough ASICs to find blocks with certain regularity they surely can afford to rent a basic bare metal server to host their node.
Latency has nothing to do with compute.
It does in this case. If you care about validating and broadcasting your own blocks as fast as possible you don't want to run the node in a cheapo VPS that is timesharing the physical CPU with a thousand other virtual machines.
But besides this irrelevant non sequitur my point still stands: nothing stops any serious miner from having his own "pool-grade" low latency & well connected node. It's orders of magnitude easier and cheaper than running a big mining farm.
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