No government in the world will approve something that will give their citizens privacy and hence do not expect the authorities to approve mixers when they come up with regulations, if you think that you do not need privacy and all your transactions must be transparent then there is no point in mixing your coins but the majority of the world needs some form of privacy when it comes to your financial asset and hence i will be using it irrespective of what the government say about it and hopefully we will have some trusted mixers in the long term too, like ChipMixer.