Is moving many drones in a formation so truly difficult? I’ve seen drones in formation all the time for drones show and fireworks. Hundreds and even thousands of them, and most likely they are not remote controlled but programmed to do so.

Why was the account painted as something extraordinary?

I think the takeaway is that swarming behavior is not difficult. It's relatively simple, it's cheap, and it's going to grow in effectiveness and smaller actors are going to gain access to it. That's going to be a problem for war-makers who don't take it into account. I think the pilot expressed awe at it because it was part of what beat him.

It’s not extraordinary from a technological standpoint, it’s extraordinary as a military tactic. This has historically not been how drones are used in wartime.

Beyond the shape they produce, I assume that drones for entertainment are not the same as military ones.