They knew they were gonna be attacked by drones on home soil, right? Or is it standard procedure for militaries to “camouflage” their stuff deep inside their own territory? It’s probably not very easy to cover all of these planes with tires and even some metal grids (looked very ghetto, by the way).
If Intelligence knew and couldn’t do shit there will be some heads rolling as is us usual procedure in Führers Reich.
Ukraine has been sending drones deep in Russian territories for months, they probably didn’t expect this particular attack, they were afraid something was coming and took some general, low cost, low effectivness counter measures.