why WW1 methods in ukraine?

[Trigger Mike]

I watch these videos of warfare in ukraine and am surprised that they are using trenches instead of foxholes and despite the constant drone attacks using trenches without overhead cover.  I see different fire fights going on and rarely are they in a covered bunker and even then the overhead cover is inadequate, especially when you see small drones flying in and exploding or dropping bombs from over head.  

[Sgt. C.J. Sabre, SASS #46770]

Because if they actually won their war we'd stop sending them money?