If you have funds in a wallet and it is blacklisted, then those funds are locked forever because they can see where the funds move and continue to lock any new wallets they move to. One could argue that's actually kind of a neat feature of a blockchain, in being so public.
Interesting, it goes a bit further than I had kept up with. CENTRE seems disbanded. But given this is all crypto, it is full of backroom deals... one can be sure that Circle and Coinbase are tightly coupled.
(Whether the risk is prices correctly can be discussed)