I return to the torrent examples. In the 2000s they were heavily persecuted by the authorities, with dozens of people arrested for running torrent sites. But they did not disappear and today they continue to operate. Did the authorities simply stop worrying? Certainly not. It is true that the mode of consumption has changed, but even so, torrent sites have managed to structure themselves in a way that reduces or makes it more difficult to experience problems.
Torrents are not money, that is a big difference 
And it is very hard for torrent files to be taken down, and whenever some website that is hosting torrents gets taken down they just create another one.
This can't be compared with mixers exactly since there are more centralization there, but there is always a chance that someone creates more decentralized way of improving privacy on bitcoin.