It wasn't clear that you mean only autonomous and not loitering in general. If you mean autonomous loitering munitions, they are are basically short lived min

It wasn't clear that you mean only autonomous and not loitering in general. If you mean autonomous loitering munitions, they are are basically short lived mines in the sky. We had those in the sea for more than a century, they didn't render seas unsurvivable for ships. And if you think loitering munitions are cheap vs their targets, wait till you hear about inflatable heated "tanks" that such a munition won't be able to distinguish from an actual tank. Indeed, armies are paying smart people to think about those issues. You can notice that those smart people don't plan to get rid of ground armies, instead they build jammers, lasers, and automatic guns. The original claim was about ground war being impossible anymore because of drones, which doesn't really match up with what those smart army people are doing.