That's certainly true, mate. The main intent of governments worldwide is not to stop mixers, but the whole crypto ecosystem in its entirely. This specifically applies to privacy-oriented solutions, as they tend to be much more difficult to track or trace for taxation purposes. Cryptocurrencies like Monero, Grin, and other privacy-oriented ones are at high risk from being attacked massively by worldwide governments. The same thing applies to Bitcoin mixers, and non-custodial mixing services. Believe me, the only reason why most governments have been legalizing Bitcoin is because of its transparency. With this, governments will be able to effectively tax every transaction made on the Blockchain with ease. As long as crypto can be taxed, it'll see the green light from worldwide governments.

Now, imagine if Bitcoin would've been an entirely anonymous cryptocurrency. It could become a threat against governments and central banks for the mere reason that it cannot be taxed with ease. Their excuse will be that they're trying to prevent money laundering and other criminal activities when that's not the case. Hopefully, as the crypto ecosystem becomes bigger and stronger over time, governments would be unable to effectively destroy it in its entirety.

Nonetheless, I wouldn't worry too much about Bitcoin mixers since they only represent a fraction of the blockchain network's value. The real deal would be privacy-oriented cryptocurrencies like Monero and Grin with a large number of people using them. If governments decide to ban the exchange from Fiat to a privacy coin, then the previously mentioned cryptocurrencies would become completely worthless within the mainstream world. Just my opinion