PF caused Kobe Bryant to miss 16 games last year, and he's supposed to be a "warrior" and "tough" and what not. On top of that, it was the featured excuse for Laker fans and management to account for a 34-win season.
Duncan isn't cribbing about it, isn't "making faces" that would satisfy Mavs fans. He's fighting through it, and the team is winning. If a few Mavs homers don't want to accept this, then F them all. The least all you Cuban worshippers can do is wait till your team is booted out in the 2nd round before starting to whine.