Imagine you have $X million from a hack on wallet A, and you want to launder it. First, you run it through tornado cash (RIP) a few times and move them to wallets B1 to B1000. Then, you mint an "exciting NFT collection" on your public, KYC'd wallet C, list them on a "decentralized exchange", and have wallets B1 to B1000 buy those NFTs. Even better, seeing how fast your NFTs are selling out, a few suckers join in on the stampede and get mixed in alongside B1-B1000. Well, now on wallet C you have $(X - gas fees - minting fees) etc., that is totally legal and clean. You cash out on Coinbase, give the taxman his due, and you are good to go!