First of all, you have failed to demonstrate any Samourai Wallet "address reuse bugs" that can be equivalently compared to the systemic & symmetric address re-use vulnerabilities in Wasabi although you claimed them to be equivalent on Vlad's podcast. Second, I do not claim to be "aware of all", I have merely responded to your shitty and misleading examples.
Doxxic change in Samourai Wallet is not part of the CoinJoin tx, it comes from the setup tx (tx0) and is separated afterwards, never entering a CoinJoin round.
As for Ergo's tweet, when he says "unmixed" change, he's talking about change that comes out of a Wasabi CoinJoin tx, change that doesn't match the mixed like-amount outputs. These change outputs are far from untraceable and have been the downfall of many users. Take for example, this video where Samourai Wallet demonstrates how easy it is to unwind a Wasabi CoinJoin transaction featuring a systemic case of address re-use. Take special note of the keywords "unmixed change" in the video's caption, which sates: "The 25 BTC unmixed change went to the same address as a 0.401 BTC mixed output. User didn't do this address reuse, the client did."