This jumps the rhetorical shark. Nobody said they’re unrelated. Just that the unrest is a response to the collapse. It would have occurred if the government seized dollars or not. The dollar seizure was a response to the collapse.
Temporary and permanent capital controls have a long history of peaceful implementation. Economic collapses do not.
You’re missing that the measures have been taken in other contexts without unrest, e.g. Iceland, Cyprus, FDR’a gold confiscation. If X always precedes Y, and Z sometimes does but sometimes doesn’t (and when it does, is twinned with X), and we witness X, Z and Y, X is the dominant explanation for Y.
-- Simon Kuznets
This is a contradiction. You said social unrest is caused by financial collapse. International finance in a globally integrated economy like Argentina then necessarily becomes a piece of the financial collapse that causes unrest.
Also bear in mind that in the US it is a rich person's game indeed to hold foreign currency. But in Latin America and especially Argentina USD is far more common in the common man's hand.