There's no way your average ordinary Dalek on the street wouldn't be threaded with all manner of plastic to support all sorts of basic technology. Sure the Daleks would have been able to cut the Plastic Troopers in half, but the Nestene Intelligencia themselves would have been able to shred Daleks remotely, or more likely (after a few million Daleks exploded beat out their natural arrogance) they would have have been able to create huge exclusion zones during the war.
You didn't wonder why such a small and morally dubious player had been drafted by the Timelords in the Time War?
You didn't wonder why such a small and morally dubious player had been drafted by the Timelords in the Time War?