This isn't particularly true, there are a lot of details to how KYC/AML for crypt works under the hood for that escape the discussion usually and leave gaping laundering holes. Crypto has its own equivalent of trad-fi shell companies to enable laundering, and it's a bit of a miracle for the space that these details haven't surfaced yet. I'm hoping they don't until the space is much more meshed into regulated finance, such that not much can be done about it.