This is a high intensity conflict. Both sides have attained lots of weapons from each other. Russians have gotten their hands on Brimstone missiles fully intact, Javelins, Switchblades, M777s, Caesar howitzers etc On the other hand the Ukrainians have gotten their hands on Russian tanks including recently a T-90 intact.
But in this case it doesn't even matter because the Mojaher isn't a high end Iranian UAV. Do you know how many Bayraktars have fallen into enemy hands ? Or how many Chinese UAVs have been shot down by the Houthis in Yemen ? The Russians bought this UAV along with the Shahed-136 precisely because they're effective but low cost and expendable. Better to lose a $2 million dollar UAV than a $36 million dollar SU-34 for example. The Russians seem to be using more and more of these, including the Shahed-136 (Gerun-2)
The trick is to use them in large numbers, to saturate the airspace. Pairing them with artillery strikes and ballistic/cruise missile strikes makes them even more effective because then the enemy air defense units begin second guessing themselves, not knowing whether to target the missiles or incoming drones.
Anyways based on the successful strikes lately, especially last night in Bela Tserkva, the Russians have definitely gotten their money's worth.
The russians ought to bomb and destroy it at the very least...this is one of the reasons I didn't want drones to be sold to those worthless, careless drunkards. Retards lost this in a matter of days...Houthis protected our technology better for years.