What will happened to those who use the mixer previously. Is there a chance that my Bitcoin will be connected by Bitcoin use from money laundering or we are still safe? I use Chipmixer every week to mix my coins. Its sad to read this bad news. 
Agreed. This is very much similar to how the government has arrested Tornado Cash's developer for creating a tool to protect someone's anonymity and privacy. I reckon if a car was used by a criminal to kidnap someone, the government cannot arrest the car company or if a cellphone was used as detonator for a car bomb that killed hundreds of people, the government cannot arrest the cellphone company.