The "contrails" shown are not necessarily aircraft related, certainly they are not concurrent with the image, but remnants from some time before, like 30 minutes, or more. The "contrails" could also be from the blow-off of cumulo-nimbus, but their formation and their orientation make it more likely they are indeed aircraft related. If they were from aircraft watching the drone, the "contrail" would be sharply formed and these are not.
