Yeah, they need a stable currency. What could be better than USD as a medium of exchange? Bitcoin surely was not ready to be used as cash to purchase daily needs. However, it doesn't mean that Bitcoin is useless. We know that Bitcoin is more difficult to confiscate so that it can be used as a store of value. This is important for the people who live in an authoritarian government.
They can store some of their wealth in Bitcoin and cash out when they need to buy stuff.
Yes. Maybe the crisis in Venezuela came too soon for bitcoin to benefit instead of the US dollar.
But this case study does mean one of the bitcoin myths bites the dust (that bitcoin will help the unbanked and the poor).