For your 'theory' to actually play out Anonymint you would have to have all law enforcement agencies around the world able to access anyone in the world - just about guaranteed to never happen. Know who the owners of the public addresses in question were (many of which would never be associated with an exchange or any other business that would have real user details in any way) - impossible. And, have to be able to have some way of tracking chains of millions and millions and millions of transactions, and deal with tumblers etc. In conspiracy land maybe, in reality not going to happen.
You have a very low IQ.
They can access anyone along the chain of ownership, cherry picking someone in their jurisdication and who didn't use strong anonymity methods.
Orthogonal to that slam dunk, you are discounting the degree of tracking and cooperation that the G20 is doing and planning to do, in response the $150 trillion debt implosion coming and the need to confiscate all wealth to resolve this debt.
All wealth confiscated? How about some debt simply doesn't get paid instead.