so we can not use chipmixer now?
Sure, go ahead and use a service that has been seized by law enforcement who have also swept all coins relating to the service
Sarcasm aside, this is quite a silly question to ask, don't you think?
Even before data was seized, it was possible for analytics companies to see all incoming and outgoing transactions from ChipMixer. It was so clear and obvious, onchain. The problem was to to make a connection of incoming and outgoing (chips).
So, the only thing that really matters is if he kept sessions (logs) for more then 7 days.
If private keys were not destroyed as advertised, there's no reason why sessions were destroyed as advertised either in my opinion.