Sparks are easy to filter out. There are complex jamming and anti-jamming measures. Civilian drones aren't designed for this so they are easy to shut down, military drones are getting better at this quickly. Before the war in Ukraine people said russian electronic warfare systems and air defence will make drones useless. There were different phases in this war, at first Russians weren't even doing air defense so Bayraktars were destroying airdefense systems (which is crazy :) ). Now that Russians fixed that issue - Bayraktars aren't doing much damage from what we can see, but the artillery guidance drones are still doing OK. I've heard good things about WB Electronics Fly Eye drones for example. They have some capacity to survive in area where the radio communication is jammed.

Also - if you do jamming - it makes you a big target broadcasting "I'm HERE!". There are missiles that are designed to guide themselves towards jamming/radar stations like HARM.

So with combined arms you can: - launch a decoy - watch for radar/air defence/jamming stations - launch HARM missiles to destroy them - launch drones to guide artillery - destroy undefended bases with cheap and accurate drone-adjusted artillery fire

Also - military drones are usually controlled differently from the civilians ones. It feels more like playing RTS (click on the target, wait for the drone to get there) instead of a flying simulator (control the engines constantly). So if you're jammed for 5 minutes while going from point A to point B - it doesn't matter.

Also military drones often use satellite communication which is much harder to disrupt than direct radio connection.