While I seriously doubt Russia will use a doomsday device in space(eg a device that ruins space access for decades or centuries), the militarization of space is underway. SpaceX is actively working on Starshield and that will likely piggyback on Starlink satellites, thus making them legitimate military targets in a conflict. In contrast, Starlink by itself is more like how trains and railways can be used by the military, but have primarily civilian purposes.