What is the more important and credible point Karp actually makes?

The last point, not the first twelve minutes. The real conversation is about making sure Western democracies maintain AI dominance over China. Palantir's work with the US military gives them genuine credibility there. If you overregulate AI right now and slow down American labs, China gains ground. That is the serious geopolitical argument buried inside what started as a 26-minute doom advertisement. He gets there eventually, but it takes a while.