You are trying to claim that you can evade laws governing currency exchange by skipping around international borders. That is not how laws, borders, or currency exchange work. If you were to try exchanging Bitcoin for some currency in a country with loose regulations, you would still need to eventually get your country's own currency and would need to deal with your country's regulations on importing or exchanging currencies.
The point is not about murder or any other crime. The point is about trying to evade laws by crossing borders. At best, your strategy would shift the problem from regulations on currency exchange within your country to regulations on importing currency to your country; you still do not get a situation where your government has no power to freeze or seize your money.