There are many confusions mixed with stereotypical startup culture in the first video. A global stable currency is not :

- Dollarization, that is an already relatively common phenomenon (Zimbabwe, Argentina...) with controversial effects. Definitely not a silver bullet for hyperinflation.

- A payment system, that requires to work tightly on UI/UX, on cultural preferences, to adapt to local infrastructure... Exactly the reason M-pesa succeeded where many silicon valley startup failed.

And then, there are the technology choices, the stability mechanism, the regulatory aspects ...