Why would the conversion of the money to bitcoin.... save his life? Bitcoin is still "money" ....so the people that were hunting for his money, stopped doing this, because he transferred it into his Bank and then bought Bitcoin with it?
Those same people can still take him hostage.... ask for a ransom from his family ....and then get hold of the bitcoins again. So, he is still in danger... I will suggest that he leave that country and go back to his family.
The idea is that crypto saved their life because it was done quickly and digitally and he wouldn't have to carry the cash, and that's how he got away with it. Plus, you can't always leave a nation with that kind of money, even transfer via bank wire takes a lot of time and effort. But with crypto? It's done in matter of minutes. Of course there are loopholes in the story, but it's not really a stretch to believe this could happen.