I wonder where they did this research. It was for sure online on some technical website and not randomly over the phone like those surveys are usually done. I am certain, they wouldnt get such a high percentage that way because 40 % dont even know what crypto is, yet alone they would trust it over fiat.
Very highly likely the survey was done where the participants already use crypto currencies. Hence you will be getting a biased result. And the total number of participants is very low. So the result is most likely no where near accurate. Like 26% says that they will use bitcoin over fiat currency, but the survey shows that only 13% uses bitcoin as a medium of exchange.
To be honest, this fact generally saddens me. It turns out that people believe in their local currencies less than in bitcoin. Although they understand that local currencies are backed by at least something.
What's there to be sad about? They trust bitcoin more than their local currency because any wrong monetary policy made by the government will end up making their currency worthless. Do you think your local currency is backed by something?