The system does not represent ownership the system only tracks of the validity of transactions and if the North Korean government proposes a valid transaction of your BTC or ETH to an address they control and a mining-node includes that transaction in a block which a majority of the network accepts then those assets are no longer yours they belong to North Korea.
The properties of the crypto-asset ecosystem which allow it to be ungoverned also make it ungovernable.
A paraphrasing of the GP without using magic terminology is to say that they are playing by the rules in an unexpected way using unexpected combinations and sequences. More briefly "playing by the rules as written".
For those interested in this, CT (crypto twitter) makes tracking North Korea's stolen winnings a bit of a sport.
samczsun, an excellent security auditor who's working at Paradigm these days, broke down some of the org in a post the other day.
https://x.com/samczsun/status/1906754853063565720?t=N4aqa6Vy...
Taylor Monahan at MetaMask also makes a habit of tracing funds and shares some pretty interesting finds around NK's laundering efforts.
Oddly I am not in the least bit shocked. Now if we found out that this was an inside job I would again not be the least bit shocked.
BTC is inherently deflationary in the sense that once new coins cease to be mined the total number of BTC will decrease over time due to lose, theft and death. I know that I lost my wallet with the only BTC I owned 10 years ago. I can name several other people that have done the same. I would think this one property makes it undesirable for use as a currency.
How is this any different from losing your wallet with physical currency?
The second point is that most people keep a lot less money in a physical wallet, usually no more than say a few hundred dollars. Whereas a bitcoin wallet will often contain thousands or more so is more akin to a bank account.