Unfortunately "LE" around the world does not care for privacy. In fact, they put financial privacy on the same scale as money laundering. If you lost coins in CM, the best lesson you can take is that you should not trust a centralized service.
Sure. But a lot of honest people used ChipMixer also. They should have confiscated only the keys linked to fraud, carding, ransom attacks. Instead, they confiscated all money. And who knows... maybe they will send letters to Coinbase ,etc ... to return a lot of coins, or the $$$ equivalent, or all the accounts money! why not? most people will not afford a lawyer, or wait for years.
then they come to press and say how brave and smart they are, that they seized millions of dollars from frauds, etc.
The LEs are always at it. They will go to any extent to frustrate people all in the name of tracking illegal transactions when in the real sense most transactions conducted on chipmixers are not illegal but for the sake of privacy, the users made such steps so as not to reveal their identities so that as to retain being anonymous. It is sad that even the government too are sometimes using it to smare their perceived opposition since they got knowledge about their financial activities. I mostly pitty those under the raiders of the LE because they are always the target of this act from them but I believe if you can get a good lawyer, you can sue the government over any such act and recover your money from them.