During the 6 seasons from '08-'09 to '13-'14, Parker led the team in scoring 5 times, led the team in assists 6 times and led the Big Three in FG% 4 times. He did that while playing in over 80% of regular season games. During those 6 seasons, he played over 3000 more minutes than Ginobili, which would amount to more minutes than either played during any one season.
Dude looks bad out there right now - no one is arguing that. But let's not forget how much the Spurs have depended on him to carry the load.