The quotes suggest that system has actually been deployed and used successfully in real world conditions. Also, your objection doesn’t really fit how drones ha

The quotes suggest that system has actually been deployed and used successfully in real world conditions. Also, your objection doesn’t really fit how drones have been used. Massive highly coordinated drone swarms are extremely unusual, the threat is mostly individual drones or small clusters. Many very dangerous drones are well under 100y/s aka 200mph. 1000 yards/second aka Mach 2.7 is well beyond the ‘drones’ people are concerned with and into expensive missile territory. Which is where anti missile systems get used.