I don’t know how you would actually defend but there is probably some selection bias too. The videos are published by the drone operators, they probably have an interest in publishing videos of successful strikes.
I believe both Russia and Ukraine train some soldiers via shooting target/dummy drones and skeet.[1]
And there are videos out there of Ukrainians and Russians successfully shooting down fpv drones. [2][3][4]
(Content warning: war videos but there shouldn't be any gore in them)
[1] https://xcancel.com/RALee85/status/1948675201983553864
[2] https://xcancel.com/RALee85/status/1920365175766483080