That's not really relevant; the U.S. government has enough leverage over the global (fiat) financial system that they can cause any account in any First World country to be shut down.

The actual reason to discount this is that account shutdowns are flashy rare events that reliably summon HN outrage, and so the kind of person who posts here overweights how likely they are, at least for people not on the margins of society. (If that weren't the case, the system wouldn't work and normal people wouldn't use it.)