I loathe Bitcoin, but that’s vastly wrong. As one counter-example, the Syrian civil war didn’t only displace poor people who never had anything to begin with; it displaced a lot of middle class families, made of engineers and doctors and such, who did have assets to their name but that were almost certainly incapable of taking it out of the country with them.
It remains to be seen whether it would have been practical to move money from Syrian liras to Bitcoin. No one wants to buy hyper-inflating currency.