Since it's illegal in both Germany and US to run an unlicensed money transmitter service, and ChipMixer was running in just about both countries, it's pretty much certain that it did break the law.

I have nowhere stated that there are no laws that prohibit such activity. I have merely argued there is no law that prohibits mixing, which is true as far as I'm concerned. In no court have I ever seen mixing being equated to some money transmitting service's product. You can practically mix coins yourself, with absolutely no other users, even though it's not recommended for your privacy. But it is, and can obfuscate in an extent. Coinjoining is neither money transmitting.