Exactly, it can get out of hand quickly. Those dumb missiles may be setup to take queues from other autonomous platforms passing information along. Only one missile in the swarm needs to find the target and send it along to everything else. Doing coordinated attacks with waves of devices coming in from every angle at a high volume simultaneously. It's basically an unwinnable defense scenario. For the price tag of a carrier you could easily justify the cost of thousands of unmanned vehicles. All of these old hat platforms are obsolete, manned fighter jets, navies, mechanized infantry all easy pickings.