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.
They need stable currency, that is true. But is it foreign currency solution? This is also the way that one country colonize the other, in a way. Bitcoin can't help the country, it can only be support for individuals but it can't save economy and financial system in Venezuela. They need help but not in a way that will longterm only make them weaker and more vulnerable.