Xenu we love you but we use tor and monero for a reason. Let us use this as well without admonishing our better angels.
If the advantage of 2 wallets is one more hop, is it any better than just churning? I can understand the benefits of using different address for different purposes.
By separating the incoming and outgoing wallet, you not only add an additional intermediate step that helps the anonymity of the entire network, you also consolidate the enotes, i.e. the transactions. If you top up the spending wallet with the income wallet as soon as it is almost empty, you are taking this step naturally and not artificially for the purpose of mixing. It's discussed verbally in the video, ArticMine just adds that for KYC transactions it might make sense to add another rule to this practice.
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