For my own understanding bitcoin mixing is not money laundering. If the chip mixer is closed, it is probably because the chip mixer did not properly comply with the concern which caused it to be closed.

Because if this is a way for money laundering, no more than the Chipmixer took longer to operate. The only sad thing is that Bitcoin mixing is open to anyone who will use it, and there is no doubt that it can be used by someone with bad intentions. So no one is saying that Bitcoin mixing is bad, is there?

In addition to that, Bitcoin mixing only hides its true identity via the addresses used by Bitcoin holders who make transactions, that's the only thing I know why it works as a Bitcoin mixer.