"repeating" is a nitpicky, desperate criterion that fans of other franchises parrot specifically to discredit the spurs. It's pretty similar to the way Galileo cherry picks Duncan stats once every few weeks to discuss how he's the first player older than 38 years, two weeks, and three days to record a 23 point, 12 rebound, 2 block game while wearing adidas shoes and maintaining an Elo rating above 1989.
There's no special "repeat championship" trophy that teams earn by doing do. There's no "repeat champion" le awarded by the NBA to recognize the feat. A championship is a championship. Ordering is irrelevant. Five is five tbh. the specific cir stances that prevent a team from "defending world les" (which aren't actually world les at all, but NBA les), are unique to a given year, not an inherent characteristic of a franchise.