Thus indeed, this made the battlefield larger instead, now common trucks, warehouses and shipping containers are legitimate targets.
What Ukraine destroyed doesn't help either, for example they destroyed early warning airplanes intended to warn Russia if incoming missiles are nuclear or not. How Russia have to assume incoming missiles are nuclear, specially if they are flying in the regions where their land nuke detectors were destroyed too (I think 1 or 2 years ago Ukraine did that).
Thus Ukraine proved, that civilian equipment can destroy nuclear deterrence. Now common trucks and containers are a threat as big as many advanced military hardware out there. A truck with a bunch of drones can open a hole in your nuclear defense as much as stealth planes were needed for this before.