It does have something to do with US entities. If the goal was anonymity, this move shows that it’s possible for it to be taken away by local entities. Imagine if all countries and localities did this.
Also: re your comment below a reply, yeah sure you don’t need Coinbase to trade crypto. coin ase is complying with local regulations, others will have to follow. So again, the original comment from OP around promises of Crypto is still accurate