The reason. Why electricity in flashes of lightning is so powerful is that the thundercloud loads electricity into them until electricity travels to the ground. There is the possibility that insect swarms would get the same electric load as thunderclouds. If insects are flying at high altitudes and radio impulses are hitting them. That can raise the electric load on their body to a high level.
When small insects flap their wings. They can form static electricity in their tiny hair. The insect's hair acts like all other hair. And when it moves, it forms static electricity. Even if the voltage of one insect is not very high, billions of insects can form quite a high-power electric phenomenon.
There is also possible that static electricity forms the ion channel in the air which conducts lightning to a certain point. Even a weak ion channel makes the point where electricity can travel easier than elsewhere. And that thing can cause problems with communication systems.
Insects are searching warm places. And the electric field can disturb high-speed data communication. Also, there is the possibility that insects can aim lightning at that communication equipment.
Also, insects themselves can load with electricity. When insect swarm flies in the electromagnetic field like radio waves that radiowaves load electricity onto their bodies. When radio waves are loading electricity onto the insect's bodies they face a similar effect as starlings when they are sitting on electric wires.
They will not get an electric shock because they are not touching the ground. When starlings touch the ground. Electricity travels away from it.
The electric load continues to grow until it would hit to ground. But the insect itself will not feel anything. But when that insect sits on something. Electricity travels out from it. And if that thing is some kind of electric device that electric shock can disturb or even destroy the system.
https://www.sciencealert.com/insect-swarms-can-electrify-the-air-as-much-as-a-thunderstorm
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