Yeah Venezuela tried doing that but AFAIK it was a super sketchy project that wasn’t even blockchain-based but they rather created a fake blockchain-looking database that was highly centralized and weird. The concept itself isn’t new but it hasn’t really been put to the actual test. I think there’s so much more progress from CBDCs of big states of the world than the sketchy thing Venezuela did.
I’m really really curious to find out if this mexican thing is just a thing to attract investors or they’re actually finally doing something legitimately on a blockchain. Interesting anyway.