> Also, no, money laundering is not possible on most chains since all transactions are public.

Citation needed — as far as I know there are cryptocurrencies where this is not the stated goal. Also public does not equal no money laundering, because the transactions are at least pseudonymized.

Dubious sales on the darknet were literally the real world problem that made cryptocurrencies what they are today.

That article doesn't really support your statement.

You can have anonymous BTC address. You can tumble it and you can exchange it at anonyy location.

It is the most anonymous digital currency after cash cards.

You can tumble it, but Bitcoin is not private by default. It might provide opt-in privacy if you go out of your way to use mixing services.

> It is the most anonymous digital currency after cash cards.

Monero is far, far more private. There is a reason why most reputable cryptocurrency exchanges don't accept it and it's because of its privacy features.

These make it impossible to trace your transaction history (and comply with regulations), which is quite trivial to do with Bitcoin.

who and when invented term "money laundering"? Ehat was initial meaning for this term ?

I thought tumblers were being actively used for laundering money.