Well the entire country of El Salvador now believes it to be the best option they have as a currency of choice. So I guess your points might be valid for some

Well the entire country of El Salvador now believes it to be the best option they have as a currency of choice. So I guess your points might be valid for some very minority stake, but they're popular because you can trade them like stocks and even trade futures on them to make money. So sure, like all financial systems, it's being used for bad things. But cash is used far more often than anything else to trade money for bad things.