Not sure how I am supposed to answer this question. By doing it?
When they do it, that makes the Sybil attack detectable.
I came to that conclusion, because I searched the source code and I found no warnings that have to do with Sybil attack. In fact, the word "sybil" does not exist in the client: https://github.com/search?q=repo%3AWalletWasabi%2FWalletWasabi+sybil&type=code. Can you direct me to the part of the client's code that warns the user about coordinator attacks?
So you didn't even test the supposed vulnerability in the client before making a false accusation? Wow. It's just like your other false accusation when you said WabiSabi has a worse Boltzmann score than Whirlpool despite never actually calculating any scores. Here's screenshots of the multiple warnings in the client that you said "absolutely" aren't there:
Bold message in the coinjoin status box -
Yellow /!\ symbol in the coin list -
