[pydry]

It had a lot to do with it. Kursk was a heavily forested area where the Ukrainians largely had small troop deployments hiding under tree cover where fiber optic drones would hunt them down.

There are thousands of videos of this in Kursk alone.

Ukraine are able to set up "shielded corridors" to protect critical supply roads from fiber optic drone attack behind the front lines in the donbass but in kursk they were exposed and defenseless.