What happened in Samourai is that a non-custodial wallet was charged for "allowing" money laundering. That is so broad that anything can be considered likewise. We hadn't experienced such a case before, it was mostly mixers which were getting shut down, and lawfully, as they were transmitting money. Now this is a game changer. Joinmarket, Electrum, Bitcoin Core, DEXes, C++ libraries, Internet providers, this forum-- anything can be considered a money transmitter after Samourai.

And for those who think Samourai was shut down: It's just one coordinator. Another one might pop up. Whirlpool isn't over, and probably that's why they had announced decentralized Whirlpool recently.