Earlier quoted context omitted.
That quote was Russian observations on their securing valuable technical information, but lamenting on their inability to overcome their capability gap through spying due to changes in tactics of their "main adversary". In WW2, a major factor for the US Naval success in the Pacific was a change in attack doctrine. Aircraft would attack relentlessly from multiple directions, overwhelming the Japanese defenses. In the…
In my opinion, the Russians are quite tactically adaptive. The current war has seen tit-for-tat adaptation between both sides. The Russians don't/can't invest resources in not losing personnel. It's not a priority for them.
But they aren't. They just added Iranian drones to their arsenal.