I interpreted their point to mean; if the device doesn't have any DC voltages inside, it's not running transistors or micro-contollers; the D in DRM; i.e. "no s

I interpreted their point to mean; if the device doesn't have any DC voltages inside, it's not running transistors or micro-contollers; the D in DRM; i.e. "no smarts". No smarts, means no DRM.