>Just giving up on money laundering isn't something most people are willing to think about, particular for an experimental payment system that they don't care about and probably won't use.

But nobody is actually advocating this, least of all me. The argument is that tracking every financial transaction is no longer viable, whether we like it or not.

Moreover, digging your heels into the sand and saying "but it's not right to give up on money-laundering" doesn't change the reality: there exists technology that makes arbitrary, anonymous payments trivial to perform. What do you propose we do?