In practice, maintaining anonymous ownership of your assets on BTC is excruciatingly hard, because it's a public record.
The organizations that monopolize violence ("governments", typically) have ways of compelling people that simply ignore some magic number in a distributed database. Please do a thing or we'll do a thing to someone you care about. I suspect even Satochi would happily give up the private keys to avoid a visit to Lubyanka...
That's not to say that there's no value to these things, but real life violence trumps imaginary freedom.
You believe you've done a thing in contravention of your government's laws. Perhaps you've done it and will not be caught. Perhaps you've done it and they haven't gotten around to asking you politely not to do this. Some crypto currency obviously leaves a paper trail for all to see; some states it doesn't and perhaps doesn't, but perhaps does.
Autonomy to break a law and not get immediately punished for it isn't really freedom from that law.
To clarify -- breaking a law is not imaginary. Maybe you've broken the law and haven't immediately faced any repercussion, but that doesn't mean that bypassing money laundering controls renders those money laundering controls or punishments for breaking the controls imaginary.
(edited to add the clarification)
You might ask “what does such a crackdown look like?” And the answer is, they would simply round up and throw in jail prominent crypto people, make it a crime to do anything with crypto (buy, sell, use as currency etc.) and put the fear of god in everyone else so that nobody dares touch crypto.
Do the deals between your crypto things that are not controlled by governments and taxations and leave the rest of us and our economies alone.
No real world government that I'm aware of, even the liberal democracies, would pass a law that is circumventable by crypto and then ignore it when crypto becomes widely used to bypass that law. They'll restrict access in such a way that they can identify who is who (KYC) or ban the network altogether. This is what we already see happening.
The only way this works to bypass the government is if it remains a relatively uncommon tool. And if it's an uncommon tool, it's not a useful currency.
[0] https://bitcoinmagazine.com/legal/nigeria-looking-to-legaliz...
I will say that this could be a valid use case: if you have an ineffective oppressive regime, you may benefit.