They are not critical of Wasabi because they think it is bad or doesn't work, they are critical of Wasabi because their goal is to scam people out of their Bitcoins.
Yes, Kruw. We want to scam other people's coins. That's exactly what we're doing in here.. This is our ultimate goal. Lol.

Since coinjoins are non custodial and Wasabi never reveals any data to any third parties, these scammers will tell any lie necessary about Wasabi in order to get people to give up control of their Bitcoin and make their data vulnerable to government seizure by using their "mixing service" instead.
We've, ourselves, said that the software reveals no such thing, we're just criticizing the part where you're lying about fungibility and funding mass surveillance firm. You can reuse that strawman as many times as you want, but the fact remains the same.
By the way, these "scammers" will let mix coins that were denied service by the ethic guidelines of zkSNACKs' coordinator, so we're at least superior on the fungibility part.