If your money is in private crypto or offshore you have nothing to worry about.

i'd strongly caution anybody foolish enough to go down this path

financial watchdogs and international treaties make it impossible unless you are perhaps a multi billionaire who can afford to buy people at the political level

Except perhaps jail time.

Lying about your assets to avoid paying a lawful fine is criminal. Just because they can’t see your money doesn’t mean they can’t prove that you have it, and can’t jail you for hiding it to get out paying a fine.