it is possible to launder money using bitcoin, the simplest thing to break up bitcoin in some exchangers without the need for KYC.
and from the exchanger it is withdrawn with other cryto assets.
You'll be trace because exchanges uses only few wallets although with difference address per user.
If that exchange is regulated by the government, they can require the exchange to give information if the AMLC will conduct an investigation on the certain address being use for suspected money laundering, the best way to do it is through mixers, they are not regulated so it will be hard to trace the money once its on the mixers already.
In that case, many people will opt to use privacy coins, many of them have mixer features and are untraceable. On the other hand, privacy is a right, even the congressman mentioned how the USA will be to protect citizens from prying eyes when doing crypto tx and he referred to the idea that privacy coins are going to be needed, unlike China, they have a different market, who knows what will happen with their new CDDC.