What you should also consider is, that the law enforcement can lie about the data to spread panic!
So far nobody was arrested. If they really have the data, why should they publish that they have it? If they actually have it it would be much wiser to keep quiet until you can actually make the arrests.
this used in war, you announce that you have many weapons and that you are going to take place X, Y and Z or else that you are conquering a lot of ground and that the enemy is being forced to retreat because he is losing a lot of military material. with that announcement the enemy starts to lose focus, spends more time thinking about whether the other side is really speaking the truth or not, and everything gets worse when it gets worse when you have little military equipment and few men to fight while your enemy is announcing that he has 4x or 5x amount of military equipment and 10x amount of men to fight.
with that in my opinion in the case of ChipMixer.com the authorities announced that they seized many bitcoins, servers and revealed the identity of the owner of ChipMixer.com, they did that which is precisely so that anyone close to the owner of ChipMixer.com will have afraid to deal with the owner of ChipMixer.com and turn him over to the police while the owner of ChipMixer.com will start to live in fear and isolated from people, which will eventually get mentally frayed and will make mistakes that will allow the police to arrest him .
the police may have lied about the identity of the owner ChipMixer.com only to catch the real owner of ChipMixer.com now that the police have made the announcement, it's a matter of time before they arrest the owner of ChipMixer. with
What I can't figure out is how can the police prove that the owner of ChipMixer.com knew the origins of the transactions?
governments will use this case as an example and will not give opportunity to make fair judgments based on proof and laws