Why a coin issued by the government and guaranteed by oil, is not recognition by the community. I know that the US embargo has had a lot of impact on Petro Coin, but I do not think it's a major cause for the community not believing in Petro Coin.
1) Venezuela can't access their oil. Their infrastructure is crumbling and their oil sector is practically non existent. No point being backed by an asset that no one can access or mark use of.
2) Maduro is a murderous dictator. If you buy this coin, you will literally be helping to prop up his regime and be furthering the suffering and death of the Venezuelan people.
3) Any US citizens who buy this coin could face jail time.
In short, it's a shitcoin, and buying it makes you a morally evil person.