But with the news of hackings, the services of anonymity are also targeted by the government due to the usage of theirs. The government only looks at mixers like that and not for ordinary people increasing our privacy.
I honestly don't think they differentiate mixers into a group of "good guys" and "bad guys" like that. Based on some articles that they published (the US at least), it's clear they consider a mixer or any privacy tools legal, but the government must have access to the data, or they'll call it illegal, and so on. Obviously, a business will get more scrutiny if it processes a high volume of hacked funds. More marketing definitely increases the chances that bad actors will abuse the service for what they need, so the dev must be careful with that. CMIIW.
Government will always have some hidden clauses in their rules especially when it comes to privacy issues that involves money.
Again, the US is the center of attractions to the world, any developments, whether positive or negative, at some times impact the other parts of the world. If mixers are considered legal, to some extent, as you read on the article, I think that other countries may follow the same process or idea.
In my opinion, the US sets some standard, and as long as the current regime of President Donald Trump remains crypto friendly, we may have lesser regulatory effects on the crypto economy.