I personally find analysis of rich wallet no conclusive enough to classify the wallets as ones owned by whales
Which is why the really anon whales probably just sell private keys or some kind of secure storage with parts of private keys and just change custody with OTC brokers. Or that's how I imagine it actually I don't even know if that's what they do.
Or are they really just doing everything with offline agreements now? How do people keep anon being whales?