I've got no issue siding against Anthropic when they're wrong! Anthropic had a similar dispute with Bessent over the Fable launch, and there I take the government's side without reservation. If the government thinks they've found a national security problem with your highly capable new model, obviously you should agree to voluntarily withdraw it until they're satisfied, even if your best and correct guess is that it's just a minor jailbreak.
But they're not wrong here.