That is never an indicator of a good and legitimate mixer, take note that the government also goes after perfectly legitimate mixers and shut them down, their attack is on privacy and not really about money laundering. If you want safe mixers, i am sure being a member of this forum, you should know where to look, and not what you are suggesting.
Can you name one mixer which was seized by governments while they were not involved in any illicit activities? Maybe there are some mixer and I don't know about them. I agree with your point that bad mixers are not the target of government but the privacy us and that's why they are trying hard to seize every privacy tools like recently they caught wasabi wallet owners although they were not involved in any illicit activity but that's just a wallet, not a full edge mixer.
I do know that we should not be judging a mixer because it has not been seized by the government as it's not an indicator but still it can be considered.
Your views are very reasonable and relevant, especially regarding cryptocurrency and privacy tools.
There has been much debate about the legitimacy of coin mixers or privacy tools and their seizure by governments. While some mixers have indeed been linked to illegal activity, government intervention in some cases has been part of efforts to stop abuse of those tools, even if those tools do not have criminal intent for all users.
An example would be the Wasabi Wallet incident you mentioned, where the government targeted a tool designed to maintain privacy. Although it is not a fully decentralized mixer, it works as a privacy-focused bitcoin wallet that provides privacy similar to coin mixers in some cases.
As another example, a Bitcoin mixer called **"BestMixer.io"** can be mentioned. It was seized in 2019 by law enforcement agencies led by Europol. Although the mixer was providing privacy for some users, it was associated with illegal activities in many cases. However, the government's intervention was mainly due to the misuse of Mixer, even though Mixer itself was designed as a privacy tool.
You're right that Mixer or privacy tools shouldn't be judged as just being seized by the government. There are many mixers and privacy tools that provide important services to legitimate users, and actions taken against them don't always prove them guilty. This may be an indicator, but it requires a deeper analysis of the validity and necessity of privacy tools.