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ChipMixer has already responded to these concerns:
ChipMixer provides fungibility, not secrecy.
When you use CoinJoin or TumbleBit, you fungible bitcoins but it is no secret that you used it.
When you use Tor, it hides your connection, but it is no secret that you used it.
When you use Https, it hides your data, but it is no secret that you used it.
Fungibility means that every chip-sized transaction may be owned by anyone and there is no connection with previous transactions.