I agree the wording is a little vague, but now you're just being pedantic. Her point still stands. "Freeze exchange of tokens" doesn't have to mean "stop the Bitcoin network from operating", it could also mean simply issuing a government order to all exchanges to not accept a particular UTXO. Anybody operating an exchange who doesn't want to go to prison has to comply with the order. Governments can do that -- it's not that hard to issue an Interpol alert for a particular UTXO, legislation and enforcement just haven't caught up yet. That effectively "freezes the money", because then the person holding that UTXO cannot withdraw it anywhere. Governments already do this with paper money, which is why laundering cash is such a headache, and Bitcoin only makes it EASIER to track and prevent illegal flows of money. Paper cash is still more decentralized than Bitcoin, hence the article's main point stands: Blockchain-based systems are not what they say they are.