besides, whatever you suggested could be applied to all other Coinjoins that use a centralized coordinator, which is why I said "let's keep criticism" fair.
If Wasabi sybil you your coordinator fee pays for their transaction fees and so sybil is free for them.
If Samourai sybil you you pay nothing after 1 round and they pay transaction fee for every round so sybil is very expensive for them.
Not the same at all.