I am sure this does sound little fishy because if authorities had any problems then they would have targeted other big mixers in existence however they are not because it simply straight business.
The government targeted Chipmixer, seizing user funds and data:
This is why there's simply no point in responding to any of the "critics" in this thread that advertise mixing services in their signatures: 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. Since coinjoins are non custodial and Wasabi never reveals any data to any third parties, these scammers will tell any lie necessary to get people to give up control of their Bitcoin and make their data vulnerable to government seizure.