They will accuse him of allowing or facilitating this whitewashing to work.

Imagine that you have a bar, illegal gambling is played inside your home by some customers. The question now is do you ban this activity? No, then you can be considered an accomplice, even if you can't even identify the customers who participated in illegal gambling. You can say, that I didn't know who played. But, did you have any signs indicating that you were not authorized? When you found out, did you do anything to prevent it from happening again?

With this example, I just want to say that there are many ways to make an accusation in these types of cases.

But I believe that the problem of the alleged owner of ChipMixer will have more difficulty in defending himself, nor will it be the mixes he made, but the fact of using false identities.