Contrary to their preferences, when 12% of your trading volume comes from a Chicago-based trader, you are square in the realm of "governed by applicable US laws".
I’m pretty curious who their large client in Chicago was. Might be Jump Trading but who knows?
That's probably Binance.US.
CFTC explicitely claims that 1) that's not true, 2) CZ and rest of upper management were aware that their restrictions on US users were just for media.
Also, even if it were, having a subsidiary does not magically launder things the parent company does.