Yes, they are very visible on chain.
Discussion
But which part of Bitcoin wasn’t mixed yet?
Eh?
Many of sats you buy were mixed by someone at some point
Right, but if those sats get to you via a KYC source then that means nothing.
They visible but eventually they end up on KYC exchange and then they mixed again eventually. Cycle of life. But one day they all will be constantly mixed through different federated solutions 🤞🏻