https://gizmodo.com/man-suspected-of-stealing-600-bitcoin-mining-rigs-break-1825360142
Iceland is the size of a small city... Its not like they have a need for max security prisons, or that their PM is a big target. Their population is comparable to that of Redmond based MSFT employees + respective families.
He broke out of a LOW security prison. European countries and island nations with similar philosophies have a very liberal take on corrections compared to the US.