explain how they should mitigate it, and maybe shut down their centralized coordinator altogether to encourage the proliferation of decentralized ones which won't censor transactions. But doing that would mean less money for them, so obviously much better to sell out their users than affect their profits.
This is only a small mitigation in my opinion because we will face the same conundrum as we face in something like Electrum (although Electrum isn't privacy oriented). The [coordinator] servers could simply be honeypots created by centralized deanonymizers that would directly take all the user information making mixing ineffective without needing to censor anything.