It sounds quite absurd, given that the crypto currency can not be tied to the state.
It obviously can. They could either just set up a whole new payment infrastructure, or decide to tie their local fiat currency to a crypto token, which I believe is a more realistic long term option for governments to go for. It's all about the control they will have with their own (heavily centralized) crypto currency. People will get to enjoy all benefits that come with crypto currencies, but still are tied to a constantly in value decreasing and basically unlimited supply currency tool. I think the average joes there will definitely like it, where the more out of the box thinking people will still see that they don't actually move forward with this. It's just the same garbage, but then in a different jacket.