> My main thesis is that the cost of small autonomous drones have dropped enormously over the past 20 years, and that increasingly drone swarms look like a much more capable and cost effective way of waging war
And how about the cost of drone countermeasures? Ukrainian interceptor drones are already a fraction of the price of a Shahed, and drone jamming systems are evolving at a lightning pace. Every weapon development seems like an unstoppable game changer until an effective defense is widely fielded, but that defense does tend to wind up getting fielded, or the offensive technology is completely superseded, by the time the next major conflict breaks out.
In the current Iran conflict not a single US warship has been damaged by a drone or similar system. Iran is among the leaders in drone technologies and started the war with a substantial stockpile. The US navy had not previously gone up against an adversary in the drone age and all of its ships were designed prior to the start of the Ukraine war. If there was ever a time where a large number of drones could overwhelm a ship with inappropriate defenses, it would have been then. In 5 years there isn't going to be a combat vessel in any first rate navy without dedicated counter-drone defenses and every officer will be well versed in counter-drone tactics. The best drones in the hands of the most experienced units may still be able to defeat these countermeasures, but the idea that you're going to overwhelm an aircraft carrier with 10,000 cheap drones is a fantasy.