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
That said, if you're out in the field and there's one above you, you're boned. Can't imagine the horrors of vibing, then having a grenade plop down next to you.
They are literally posted there, stop spreading fud.
it's like the dudes that throw their rifle at the drone 6 feet away, hit it, cause it explode... but they still take shrapnel to the head and neck anyway because it's only 6 feet away.
plus what happens if you miss?
and the ammo is big, heavy, and requires special tanks. non-starter of an idea.