If it is bitcoin that is stolen, the coin can be useless for the hackers because the address will be blacklisted and everywhere the coin is transferred to would be seen and also blacklisted if the government response is fast against the attack.
Bruh, you just destroyed the whole idea of being your own bank and securing your assets with bitcoin with this!
If the government would be able to completely blacklist and stop everyone from accepting your coins, then it makes no sense whatsoever to store your coins, they could simply blacklist all addresses that are not registered with name and full KYC in their database from every transferring fund to exchanges or to ATMs or to merchants and that's it for bitcoin.
Fortunately enough, blacklists don't work, and governments won't be able to do shit about it right now unless the people themselves give up and accept and lay along with this kind of stuff.
Hackers can steal from people and exchanges but it's going to be different if they are stealing from a country much more than a powerful country like China, they cannot get away with it, so I think hackers will not dare touch the country's stored Bitcoin.
Except when the "hackers" are the CCP, and this would be the actual problem, who will control those coins, and who will decide how they are used!
And if someone talks about transparency, having the coins in marked accounts, visible to everyone that browses the blockchain, can somebody tell me which one is the address that holds Salvador funds? And any proof they are still there or at least they have been at one point?