So you clearly haven't been watching his games in the playoffs if that's your assessment. Because he was absolutely destroying the rim against the Spurs and early on in this series.
He can't even reliably connect for alley-oops anymore. But it doesn't matter, because he's healthy enough to play. Same with Steph. Who, funnily enough, has still managed to play solid defense on Westbrook these playoffs despite being "injured." Somehow he's just willing himself to play good defense, move his feet side-to-side, and keep up with Russell Westbrook, of all people, despite this...