No. I asked my RIA, and he said that scenario would destroy the world economy but also it is highly improbable (he never says "impossible", which is what I like about him). There's no place to hide if the USD craters a-la reddit-like doomsdaying (not even non-US funds).
EDIT: My speculation, not my RIA's: If the global economy wasn't backed by USD, I would recommend foreign funds/ETFs, but everything is interconnected with the US economy. Maybe in 50 years if the global economy moves to anohter currency, but what is there? sterling? renminbi? rubles? rupees? there's nothing.