I think it's an interesting test case in the debate between running your team as a business and running your team under the goal of winning a World Series. Maybe the Mets aren't the best example, though I honestly don't see the harm in giving him 100 ABs in September over a Jay Bruce or something when they're 20 games out.
But let's say he was a member of the Marlins or something. You've just traded away your entire outfield, you're going to be 20 games out by the ASB, and you're already near the bottom in attendance. Sure, I wouldn't want him taking ABs away from Lewis Brinson or Monte Harrison if they prove that they're ready by then. But JB Shuck or Scott Van Slyke? I can see an argument that the bump in attendance/attention/revenue would be worth it, especially with the built in incentive to lose anyways.