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.
Agree beside they did adopted bitcoin in a quick manner. As it don't have any measures on what will be the possible effect in the long run. So, may be, the most stable way is to use USD rather than bitcoin but that doesn't mean that it is not necessary at all. Like what you said, mister, store their money in bitcoin or other alts then spend it using fiats.