This was most helpful! He also tweeted:

This is why the crypto community needs to move away from "yay, blockchain" and zoom in specifically on what is the trust model of each project. This one is definitely quite centralized, and dependent in multiple ways on a central party (venez gov) that seems not very trustworthy.

Also of note: https://www.caracaschronicles.com/2018/02/22/petro-hasnt-raised-dime/