Yeah, but no one even mentioned CoinSwap and it's not relevant at all, so why did you even bring it up?
Because the nature of breaking your history of your on-chain funds will be a coin swap/submarine swap - very different from a coin-join. Also keep in mind, in a coinjoin it's always on chain unlike doing a submarine swap that makes you go off-chain for a brief amount of time.
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People still don't know how to use efficiently LN...
Just an example:
  1. Open a 5M sats channel, could be private or public it doesn't matter too much, in the end.
  2. Do several swaps through that channel in a total amount of 5 BTC, using many swap services (boltz, loop, fixeedfloat, coinos, zigzag, chainmarket etc)
  3. close channel. On the blockchain will be reflected only 5M sats not 5BTC.
Done, you just "wash" 5 BTC.
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