Part of that though was that he was Polish, at a time when Poland and other Eastern European countries were Communist dictatorships. He represented in part a kind of "insurgency" against them.
The first non-Italian pope since the 1500s.
For comparison, note the 1968 movie The Shoes of the Fisherman, in which a priest from Russia unexpectedly becomes pope and provokes great political change.
https://en.wikipedia.org/wiki/The_Shoes_of_the_Fisherman_(fi...