Drones as a sort of submunition...interesting concept.
The Ukrainians are already using larger drones to haul smaller ones around, so it makes sense.
I could see something like a C130 deploying them by the pallet load, too (but they'd have to be AI and/or have pre-programmed targets).
Wouldn't it just be easier to pack 10,000 of them inside a -ahem- scientific balloon like the Chinese like to unleash, and let it fly over the target?
Send about 100 of them to 'collect' the information.
Oh, I forgot, those countries don't have a Biden around so enemies can commit balloon espionage without interference.