we estimate that at least 329,000 refugees worldwide have already used Bitcoin to preserve or transfer wealth during displacement, a number that could grow to between 6.5 and 7.5 million by 2035 under current trends.
Note that the methods don't involve talking to any specific refugees:
We combined public refugee data with global crypto ownership rates, applying multiple adjustments to ensure a cautious, minimum estimate. We used UNHCR country-level refugee population figures and crypto adoption rates from TripleA’s 2024 report, which estimates 6.8% of the global population owns cryptocurrency. For the top 50 refugee-origin countries (covering ~98% of refugees), we used national crypto ownership rates to estimate refugee adoption. For example, if 10% of Country A’s population owns crypto, we assumed a similar rate among its refugees.
Nonetheless, it's a cool idea and they make some interesting estimates.