No, Obama doesn’t want to wreck the economy; he’s just clueless about how to fix it. He — and many of his supporters — really do believe Keynesian theory.
And, no, Republicans don’t want to “wreck the economy” in order to hurt Obama’s reelection prospects. We just don’t think big government schemes will work to effect a sustained and robust recovery. And have evidence to back up our contention. Large public sectors really do reduce economic growth.